ACICULA

acicula

(noun) a needlelike part or structure of a plant or animal or crystal; as a spine or bristle or crystal

Source: WordNet® 3.1

Etymology

Noun

acicula (plural aciculae)

One of the needlelike or bristlelike spines or prickles of some animals and plants; also, a needlelike crystal.

Synonyms

• acicle

Source: Wiktionary

A*cic"u*la, n.; pl. Aciculæ. Etym: [L., a small needle, dimin. of acus needle.] (Nat. Hist.)

Definition: One of the needlelike or bristlelike spines or prickles of some animals and plants; also, a needlelike crystal.

Source: Webster’s Unabridged Dictionary 1913 Edition