acicula

2 definitions found

acicula - Collaborative International Dictionary of English v.0.48 :

  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.
     [1913 Webster]

acicula - WordNet (r) 2.1 (2005) :

  acicula
      n 1: a needlelike part or structure of a plant or animal or
           crystal; as a spine or bristle or crystal