mole

1 [mohl]
noun
1.
any of various small insectivorous mammals, especially of the family Talpidae, living chiefly underground, and having velvety fur, very small eyes, and strong forefeet.
2.
a spy who becomes part of and works from within the ranks of an enemy governmental staff or intelligence agency. Compare double agent.
3.
Machinery. a large, powerful machine for boring through earth or rock, used in the construction of tunnels.

Origin:
1350–1400; Middle English molle; akin to Middle Dutch, Middle Low German mol

Dictionary.com Unabridged

mole

2 [mohl]
noun
a small, congenital spot or blemish on the human skin, usually of a dark color, slightly elevated, and sometimes hairy; nevus.

Origin:
before 1000; Middle English; Old English māl; cognate with Old High German meil spot, Gothic mail wrinkle

mole

3 [mohl]
noun
1.
a massive structure, especially of stone, set up in the water, as for a breakwater or a pier.
2.
an anchorage or harbor protected by such a structure.

Origin:
1540–50; < Latin mōlēs mass, dam, mole

mole

4 [mohl]
noun Chemistry.
the basic unit in the International System of Units (SI), representing the amount of a substance expressed in grams containing as many atoms, molecules, or ions as the number of atoms in 12 grams of carbon-12 (which is Avogadro's number, or 6.022 × 10 23 ).
Also, mol.


Origin:
1900–05; < German Mol, short for Molekül molecule

mole

5 [mohl]
noun Pathology.
a fleshy mass in the uterus formed by a hemorrhagic dead ovum.

Origin:
1605–15; < Neo-Latin mola, special use of mola millstone

mole

6 [moh-ley; Spanish maw-le]
noun Mexican Cookery.
a spicy sauce flavored with chocolate, usually served with turkey or chicken.

Origin:
1925–30; < Mexican Spanish < Nahuatl mōlli sauce; cf. guacamole

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
mole1 (məʊl)
 
n
pathol a nontechnical name for naevus
 
[Old English māl; related to Old High German meil spot]

mole2 (məʊl)
 
n
1.  any small burrowing mammal, of the family Talpidae, of Europe, Asia, and North and Central America: order Insectivora (insectivores). They have velvety, typically dark fur and forearms specialized for digging
2.  golden mole any small African burrowing molelike mammal of the family Chrysochloridae, having copper-coloured fur: order Insectivora (insectivores)
3.  informal a spy who has infiltrated an organization and, often over a long period, become a trusted member of it
 
[C14: from Middle Dutch mol, of Germanic origin; compare Middle Low German mol]

mole3 (məʊl)
 
n
mol the basic SI unit of amount of substance; the amount that contains as many elementary entities as there are atoms in 0.012 kilogram of carbon-12. The entity must be specified and may be an atom, a molecule, an ion, a radical, an electron, a photon, etc
 
[C20: from German Mol, short for Molekülmolecule]

mole4 (məʊl)
 
n
1.  a breakwater
2.  a harbour protected by a breakwater
3.  a large tunnel excavator for use in soft rock
 
[C16: from French môle, from Latin mōlēs mass]

mole5 (məʊl)
 
n
pathol a fleshy growth in the uterus formed by the degeneration of fetal tissues
 
[C17: medical use of Latin mola millstone]

mole6 (ˈməʊleɪ)
 
n
a spicy Mexican sauce made from chili and chocolate
 
[C20: from Mexican Spanish from Nahuatl molli sauce]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

mole
"spot on skin," O.E. mal "spot, mark," especially on cloth or linen, from P.Gmc. *mailan "spot, mark" (cf. O.H.G. meil, Ger. Mal, Goth. mail "wrinkle"), from PIE base *mei-/*mai- "to stain, defile" (cf. Gk. miainein "to stain, defile," see miasma). Of human skin, attested from late 14c.

mole
"burrowing mammal," late 14c., probably from obsolete mouldwarp, lit. "earth-thrower" (common Gmc., cf. O.S. moldwerp, O.H.G. multwurf), from to O.E. molde "earth, soil" (see mold (3)) + weorpan "to throw away" (see warp). Spy sense first recorded
1974 in John le Carré, from notion of "burrowing." Metaphoric use for "one who works in darkness" is from c.1600.
"To much amplifying thinges yt. be but small, makyng mountaines of Molehils." [John Foxe, "Acts and Monuments," 1570]

mole
"breakwater," 1548, from M.Fr. môle "breakwater," from L. moles "mass, massive structure, barrier," from PIE base *mo- "to exert oneself."

mole
unit of molecular quantity, 1902, from Ger. Mol (1900), short for Molekül (see molecule).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

mole 1 (mōl)
n.
A small congenital growth on the skin, usually slightly raised and dark and sometimes hairy, especially a pigmented nevus. Also called nevus pigmentosus.

mole 2
n.

  1. A fleshy abnormal mass formed in the uterus by the degeneration or abortive development of an ovum.

  2. See hydatidiform mole.

mole 3 or mol (mōl)
n.

  1. The amount of a substance that contains as many atoms, molecules, ions, or other elementary units as the number of atoms in 0.012 kilogram of carbon 12. The number is 6.0225 × 1023, or Avogadro's number. Also called gram molecule.

  2. The mass in grams of this amount of a substance, numerically equal to the molecular weight of the substance. Also called gram-molecular weight.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
mole 1   (mōl)  Pronunciation Key 
A small, usually pigmented, benign growth on the skin.
mole 2   (mōl)  Pronunciation Key 
The amount of an element, compound, or other substance that has the same number of basic particles as 12 grams of Carbon-12. The number of particles making up a mole is Avogadro's number. For elements and compounds, the mass of one mole, in grams, is roughly equal to the atomic or molecular weight of the substance. For example, carbon dioxide, CO2, has a molecular weight of 44; therefore, one mole of it weighs 44 grams.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Easton
Bible Dictionary

Mole definition


Heb. tinshameth (Lev. 11:30), probably signifies some species of lizard (rendered in R.V., "chameleon"). In Lev. 11:18, Deut. 14:16, it is rendered, in Authorized Version, "swan" (R.V., "horned owl"). The Heb. holed (Lev. 11:29), rendered "weasel," was probably the mole-rat. The true mole (Talpa Europoea) is not found in Palestine. The mole-rat (Spalax typhlus) "is twice the size of our mole, with no external eyes, and with only faint traces within of the rudimentary organ; no apparent ears, but, like the mole, with great internal organs of hearing; a strong, bare snout, and with large gnawing teeth; its colour a pale slate; its feet short, and provided with strong nails; its tail only rudimentary." In Isa. 2:20, this word is the rendering of two words _haphar peroth_, which are rendered by Gesenius "into the digging of rats", i.e., rats' holes. But these two Hebrew words ought probably to be combined into one (lahporperoth) and translated "to the moles", i.e., the rat-moles. This animal "lives in underground communities, making large subterranean chambers for its young and for storehouses, with many runs connected with them, and is decidedly partial to the loose debris among ruins and stone-heaps, where it can form its chambers with least trouble."

Easton's 1897 Bible Dictionary
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Example sentences
To make the mole sauce, cover the ancho chilies with boiling water, and allow
  to soak until soft.
But making mountains out of mole hills, seems to be the predominant order of
  the day.
Blind mole rats, on the other hand, have no technology at their disposal.
Biomedical innovation has stalled, but behold the awesome power of the
  buck-toothed mole.
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Synonyms
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