also aiglet, "metal tag of a lace," meant to make it easier to thread through the eyelet-holes, but later often ornamental, mid-15c., from Old French aiguillette, diminutive of aiguille "needle," from Late Latin acucula, an extended form (via diminutive suffix, but not necessarily implying smallness) of Latin acus "a needle," from PIE root *ak- "be sharp, rise (out) to a point, pierce." Compare Italian agucchia, Portuguese agulha, Spanish aguja "needle."
piercing appendages in the proboscis of scorpions and spiders, 1831, plural of Modern Latin chelicera, from Greek khēlē "crab claw, talon, pincers; cloven hoof of cattle, horse's hoof," metaphorically "surgical forceps, hooked needle, crochet needle, notch of an arrow," a word of uncertain origin with no agreement on ulterior connections (according to Watkins, related to keras "horn," from PIE root *ker- (1) "horn; head"). Earlier chelicer (1835), from French chélicère.
1848, intransitive, "to make a fabric by hooking a thread into meshes with a crochet-needle," from crochet (n.). Transitive sense of "to make in crochet-work" is by 1855. Related: Crocheted; crocheting.
"action or process of mending a hole (in fabric) by interweaving yarn or thread," 1610s, verbal noun from darn (v.). Darning-needle is from 1848; darning-stitch from 1881.
"resembling or in the form of small needles," 1794, from Latin acicula "needle, small pin," diminutive of acus "pin" (from PIE root *ak- "be sharp, rise (out) to a point, pierce").
c. 1600, figurative, "pointed, stinging," of writing, from Latin aculeatus "having a sting; thorny, prickly," also figurative, from aculeus "a sting, prickle," diminutive of acus "a needle" (from PIE root *ak- "be sharp, rise (out) to a point, pierce"). From 1660s in a literal sense, in zoology, "furnished with a sting;" 1870 in botany.