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adder1

[ad-er] /ˈæd ər/
noun
1.
the common European viper, Vipera berus.
2.
any of various other venomous or harmless snakes resembling the viper.
Origin
late Middle English
950
before 950; late Middle English; replacing Middle English nadder (a nadder becoming an adder by misdivision; cf. apron), Old English næddre; cognate with Old Saxon nādra, Old High German nātara (German Natter), Old Norse nathra snake, Gothic nadrs adder, Old Irish nathir snake, Latin natrix water snake

adder2

[ad-er] /ˈæd ər/
noun
1.
a person or thing that adds.
Origin
1570-80; add + -er1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples for adder
  • Right then came an adder out of a little heath-bush, and stung a knight on the foot.
  • Right so came an adder out of a little heath bush, and it stung a knight on the foot.
  • adder-hipped and puff-lipped, he possesses a beauty that seems almost fanged.
  • The display is mostly bluff, but gives the snake the common name of puff adder.
British Dictionary definitions for adder

adder1

/ˈædə/
noun
1.
Also called viper. a common viper, Vipera berus, that is widely distributed in Europe, including Britain, and Asia and is typically dark greyish in colour with a black zigzag pattern along the back
2.
any of various similar venomous or nonvenomous snakes
Word Origin
Old English nǣdre snake; in Middle English a naddre was mistaken for an addre; related to Old Norse nathr, Gothic nadrs

adder2

/ˈædə/
noun
1.
a person or thing that adds, esp a single element of an electronic computer, the function of which is to add a single digit of each of two inputs
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for adder
n.

Old English næddre "a snake, serpent, viper," from West Germanic *nædro "a snake" (cf. Old Norse naðra, Middle Dutch nadre, Old High German natra, German Natter, Gothic nadrs), from PIE root *netr- (cf. Latin natrix "water snake," probably by folk-association with nare "to swim;" Old Irish nathir, Welsh neidr "adder").

The modern form represents a faulty separation 14c.-16c. into an adder, for which see also apron, auger, nickname, humble pie, umpire. Nedder is still a northern English dialect form. Folklore connection with deafness is via Psalm lviii:1-5. The adder is said to stop up its ears to avoid hearing the snake charmer called in to drive it away. Adderbolt (late 15c.) was a former name for "dragonfly."

Online Etymology Dictionary, © 2010 Douglas Harper
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adder in the Bible

(Ps. 140:3; Rom. 3:13, "asp") is the rendering of, (1.) Akshub ("coiling" or "lying in wait"), properly an asp or viper, found only in this passage. (2.) Pethen ("twisting"), a viper or venomous serpent identified with the cobra (Naja haje) (Ps. 58:4; 91:13); elsewhere "asp." (3.) Tziphoni ("hissing") (Prov. 23:32); elsewhere rendered "cockatrice," Isa. 11:8; 14:29; 59:5; Jer. 8:17, as it is here in the margin of the Authorized Version. The Revised Version has "basilisk." This may have been the yellow viper, the Daboia xanthina, the largest and most dangerous of the vipers of Palestine. (4.) Shephiphon ("creeping"), occurring only in Gen. 49:17, the small speckled venomous snake, the "horned snake," or cerastes. Dan is compared to this serpent, which springs from its hiding-place on the passer-by.

Easton's 1897 Bible Dictionary
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