Axillary
Part of speech: adjective
Definition: Of or pertaining to the axilla or armpit; as, axillary gland, artery, nerve. Situated in, or rising from, an axil; of or pertaining to an axil.
Cavity
Part of speech: noun
Definition: A hole or hollow depression.A hollow area within the body (such as the sinuses).A soft area in a decayed tooth.