axillary
From ZooTerms (Dictionary of Invertebrate Zoology)
axillary (adjective; plural axillaries; Latin axilla, armpit): 1. (Arthropoda: Insecta) Pertaining to the axilla.
2. (Echinodermata: Asteroidea) In an axil, applied to a single ossicle.
3. (Echinodermata: Crinoidea) A brachial supporting 2 arm branches
