verb (used with object), ground or (Rare) grinded; grinding.
to wear, smooth, or sharpen by abrasion or friction; whet: to grind a lens.
to reduce to fine particles, as by pounding or crushing; bray, triturate, or pulverize.
to oppress, torment, or crush: to grind the poor.
to rub harshly or gratingly; grate together; grit: to grind one's teeth.
to operate by turning a crank: to grind a hand organ.
to produce by crushing or abrasion: to grind flour.
Slang. to annoy; irritate; irk: It really grinds me when he's late.
verb (used without object), ground or (Rare) grinded; grinding.
to perform the operation of reducing to fine particles.
to rub harshly; grate.
to be or become ground.
to be polished or sharpened by friction.
Informal. to work or study laboriously (often followed by away ): He was grinding away at his algebra.
Slang. (in a dance) to rotate the hips in a suggestive manner. Compare bump ( def 11 ).
the act of grinding.
a grinding sound.
a grade of particle fineness into which a substance is ground: The coffee is available in various grinds for different coffee makers.
laborious, usually uninteresting work: Copying all the footnotes was a grind.
Informal. an excessively diligent student.
Slang. a dance movement in which the hips are rotated in a suggestive or erotic manner. Compare bump ( def 20 ).
Verb phrases
grind out,
to produce in a routine or mechanical way: to grind out magazine stories.
to extinguish by rubbing the lighted end against a hard surface: to grind out a cigarette.

before 950; Middle English grinden, Old English grindan; akin to Gothic grinda-, Latin frendere

grindable, adjective
grindability, noun
grindingly, adverb
regrind, verb, reground, regrinding.
ungrindable, adjective

2. crush, powder, comminute, pound. 3. persecute, plague, afflict, trouble. 4. abrade. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
grind (ɡraɪnd)
vb (foll by out) (often foll by down) (foll by out) (foll by out) (often foll by into) , grinds, grinding, ground
1.  to reduce or be reduced to small particles by pounding or abrading: to grind corn; to grind flour
2.  (tr) to smooth, sharpen, or polish by friction or abrasion: to grind a knife
3.  to scrape or grate together (two things, esp the teeth) with a harsh rasping sound or (of such objects) to be scraped together
4.  to speak or say (something) in a rough voice
5.  to hold down; oppress; tyrannize
6.  (tr) to operate (a machine) by turning a handle
7.  to produce in a routine or uninspired manner: he ground out his weekly article for the paper
8.  to continue to play in a dull or insipid manner: the band only ground out old tunes all evening
9.  to instil (facts, information, etc) by persistent effort: they ground into the recruits the need for vigilance
10.  informal (intr) to study or work laboriously
11.  chiefly (US) (intr) to dance erotically by rotating the pelvis (esp in the phrase bump and grind)
12.  informal laborious or routine work or study
13.  slang chiefly (US) a person, esp a student, who works excessively hard
14.  a specific grade of pulverization, as of coffee beans: coarse grind
15.  slang (Brit) the act of sexual intercourse
16.  chiefly (US) a dance movement involving an erotic rotation of the pelvis
17.  the act or sound of grinding
[Old English grindan; related to Latin frendere, Lithuanian gréndu I rub, Low German grand sand]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

O.E. grindan, forgrindan "destroy by crushing" (class III strong verb; past tense grand, pp. grunden), from P.Gmc. *grindanan (cf. Du. grenden), related to ground, from PIE *ghrendh- "crushing" (cf. L. frendere "to gnash the teeth," Gk. khondros "corn, grain," Lith. grendu "to scrape, scratch"). The
noun sense "steady, hard work" first recorded 1851 in college student slang; the meaning "hard-working student" is Amer.Eng. slang from 1864. Grinder as a type of large sandwich is first recorded 1954. To keep one's nose to the grindstone was originally to get control of another and treat him harshly:
"This Text holdeth their noses so hard to the grindstone, that it clean disfigureth their Faces." [Frith, "Mirror to know Thyself," 1532]
The main modern (reflective) sense of "work hard" is from 1828.
Online Etymology Dictionary, © 2010 Douglas Harper
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Computing Dictionary

GRIND definition

GRaphical INterpretive Display.
A graphics input language for the PDP-9.
["GRIND: A Language and Translator for Computer Graphics", A.P. Conn, Dartmouth, June 1969].
[Jargon File]

grind definition

1. (MIT and Berkeley) To prettify hardcopy of code, especially LISP code, by reindenting lines, printing keywords and comments in distinct fonts (if available), etc. This usage was associated with the MacLISP community and is now rare; prettyprint was and is the generic term for such operations.
2. (Unix) To generate the formatted version of a document from the nroff, troff, TeX, or Scribe source.
3. To run seemingly interminably, especially (but not necessarily) if performing some tedious and inherently useless task. Similar to crunch or grovel. Grinding has a connotation of using a lot of CPU time, but it is possible to grind a disk, network, etc.
See also hog.
4. To make the whole system slow. "Troff really grinds a PDP-11."
5. "grind grind" excl. Roughly, "Isn't the machine slow today!"
[Jargon File]

The Free On-line Dictionary of Computing, © Denis Howe 2010
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Bible Dictionary

Grind definition

(Ex. 32:20; Deut. 9:21; Judg. 16:21), to crush small (Heb. tahan); to oppress the poor (Isa. 3:5). The hand-mill was early used by the Hebrews (Num. 11:8). It consisted of two stones, the upper (Deut. 24:6; 2 Sam. 11:21) being movable and slightly concave, the lower being stationary. The grinders mentioned Eccl. 12:3 are the teeth. (See MILL.)

Easton's 1897 Bible Dictionary
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American Heritage
Idioms & Phrases


In addition to the idiom beginning with grind, also see ax to grind; mills of the gods grind slowly.

The American Heritage® Dictionary of Idioms by Christine Ammer.
Copyright © 1997. Published by Houghton Mifflin.
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Example sentences
Chop the dried mushrooms coarsely and grind to a fine powder in a spice mill or
  use a mortar and pestle.
If you go to business conferences, you know that at lunch it is definitely
  better to be seated next to a prince than a grind.
Many football teams use that strategy to grind out small gains from the
Those who insist there is are suspect of having a secret axe to grind.
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