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crab: crab: Crab the crustacean [OE] and crab the apple [14] may be two distinct words. The word for the sea creature has several continental relatives (such as German krebs and Dutch krabbe) which show it to have been of Germanic origin, and some of them, such as Old Norse krafla ‘scratch’ and Old High German krapho ‘hook’, suggest that the crab may have received its name on account of its claws.

The origins of crab the fruit are not so clear. Some would claim that it is simply a metaphorical extension of the animal crab, from a perceived connection between the proverbial perversity or cantankerousness of the crustacean (compare crabbed) and the sourness of the apple, but others have proposed a connection with Swedish dialect skrabba ‘wild apple’, noting that a form scrab was current in Scottish English from at least the 16th century.
=> crayfish
cat-o'-nine-tails (n.): 1690s, probably so called in reference to its "claws." It was a legal instrument of punishment in British Navy until 1881.
chelate (adj.): "having pincer-like claws," 1826 as a term in zoology; 1920 in chemistry, from Modern Latin chela "claw" (from Greek khele "claw, talon, cloven hoof;" see chelicerae) + -ate (2). Related: Chelated; chelating; chelation.
clutch (v.): Old English clyccan "bring together, bend (the fingers), clench," from PIE *klukja- (cognates: Swedish klyka "clamp, fork;" related to cling). Meaning "to grasp" is early 14c.; that of "to seize with the claws or clutches" is from late 14c. Sense of "hold tightly and close" is from c. 1600. Influenced in meaning by Middle English cloke "a claw." Related: Clutched; clutching.
gerrymander (v.): 1812, "arrange political divisions in disregard of natural boundaries so as to give one party an advantage in elections," also from 1812 as a noun, American English, from name of Elbridge Gerry + (sala)mander. Gerry, governor of Massachusetts, was lampooned when his party redistricted the state in a blatant bid to preserve an Antifederalist majority. One sprawling Essex County district resembled a salamander, and a newspaper editor dubbed it the Gerrymander. Related: Gerrymandered; gerrymandering.
[T]he division of this county into districts has given an opportunity for a Caracatura stamped at Boston and freely circulated here called the Gerrymander. The towns as they lie are disposed as parts of a monster whose feet and claws are Salem and Marblehead. It is one of those political tricks which have success as far as they go. [William Bentley, diary, April 2, 1812]
grit (n.): Old English greot "sand, dust, earth, gravel," from Proto-Germanic *greutan "tiny particles of crushed rock" (cognates: Old Saxon griot, Old Frisian gret, Old Norse grjot "rock, stone," German Grieß "grit, sand"), from PIE *ghreu- "rub, grind" (cognates: Lithuanian grudas "corn, kernel," Old Church Slavonic gruda "clod"). Sense of "pluck, spirit, firmness of mind" first recorded American English, 1808.
If he hadn't a had the clear grit in him, and showed teeth and claws, they'd a nullified him so, you wouldn't have see'd a grease spot of him no more. [Thomas Chandler Haliburton, "Sam Slick in England," 1843]
harpy (n.): winged monster of ancient mythology, late 14c., from Old French harpie (14c.), from Latin harpyia, from Greek Harpyia (plural), literally "snatchers," which is probably related to harpazein "to snatch" (see rapid (adj.)). Metaphoric extension to "repulsively greedy person" is c. 1400.
In Homer they are merely personified storm winds, who were believed to have carried off any person that had suddenly disappeared. In Hesiod they are fair-haired and winged maidens who surpass the winds in swiftness, and are called Aello and Ocypete; but in later writers they are represented as disgusting monsters, with heads like maidens, faces pale with hunger, and claws like those of birds. The harpies ministered to the gods as the executors of vengeance. ["American Cyclopædia," 1874]
larkspur (n.): type of plant, 1570s, from lark (n.) + spur (n.); so called from resemblance to the bird's large hind claws.
pounce (n.): "claw of a bird of prey," late 15c., pownse, probably from Old French ponchon "lance, javelin; spine, quill" (Modern French poinçon; see punch (v.)). So called for being the "claws that punch" holes in things. In falconry, the heel claw is a talon, and others are pounces. Meaning "an act of jumping or falling upon" is from 1825. In Middle English also the name of a tool for punching holes or embossing metal (late 14c.).
scuttle (v.1): "scamper, scurry," mid-15c., probably related to scud (v.). Related: Scuttled; scuttling.
I should have been a pair of ragged claws
Scuttling across the floors of silent seas.
[T.S. Eliot, "The Love Song of J. Alfred Prufrock"]
talon (n.): c. 1400, talounz "claws of a bird or beast," probably originally from Old French talon "heel or hinder part of the foot of a beast, or of a man, or of a shoe; foot-step" (12c.), from Medieval Latin talonem "heel," from Latin talus "ankle" (see talus (n.1)). "The extension to birds of prey, and subsequent stages, are peculiar to English" [OED].
zodiac (n.): late 14c., from Old French zodiaque, from Latin zodiacus "zodiac," from Greek zodiakos (kyklos) "zodiac (circle)," literally "circle of little animals," from zodiaion, diminutive of zoion "animal" (see zoo).

Libra is not an animal, but it was not a zodiac constellation to the Greeks, who reckoned 11 but counted Scorpio and its claws (including what is now Libra) as a "double constellation." Libra was figured back in by the Romans. In Old English the zodiac was twelf tacna "the twelve signs," and in Middle English also Our Ladye's Waye and the Girdle of the Sky.
chalicothere: "A large horse-like fossil mammal of the late Tertiary period, with stout claws on the toes rather than hoofs", Early 20th century: from modern Latin Chalicotherium (genus name), from Greek khalix, khalik- 'gravel' + thērion 'wild animal'.