What is "acicula"

Acicula \A*cic"u*la\, n.; pl. Acicul[ae]. [L., a small needle, dimin. of acus needle.] (Nat. Hist.) One of the needlelike or bristlelike spines or prickles of some animals and plants; also, a needlelike crystal.

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

1. n. a needle-like part or structure of a plant or animal or crystal; as a spine or bristle or crystal

2. [also: aciculae (pl)]

1. See aciculum

2. [also: aciculae (pl)]

Acicula are the chitinous support rods within parapodia found in the class Polychaeta.

Acicula is a genus of very small land snails with an operculum, terrestrial gastropod mollusks in the family Aciculidae.