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acicula

noun
acic·​u·​la | \ ə-ˈsi-kyə-lə\
plural aciculae\ ə-​ˈsi-​kyə-​ˌlē , -​ˌlī \ or aciculas

Definition of acicula

: a needlelike spine, bristle, or crystal

First Known Use of acicula

1784, in the meaning defined above

History and Etymology for acicula

borrowed from New Latin, going back to Late Latin acicula, acucula “small needle, small pin for a headdress,”, from Latin acu-, stem of acus “needle” (going back to Indo-European *h2eḱ-u- “pointed”) + -cula, diminutive suffix

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