Definition of acicula in English:

acicula

(also aciculum, aciculus)

noun

Zoology Botany
  • A slender spine, prickle, or other needle-like structure; (in polychaete annelids) a chitinous rod forming an internal support for a parapodium.

Origin

Late 18th century. From post-classical Latin acicula, lit. ‘small pin’, alteration or variant of acucula from classical Latin acus needle + -cula.

Pronunciation:

acicula

/əˈsɪkjʊlə/