Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun armpit

1 sense of armpit

Sense 1
armpit, axilla, axillary cavity, axillary fossa -- (the hollow under the arm where it is joined to the shoulder; "they were up to their armpits in water")
       => cavity, bodily cavity, cavum -- ((anatomy) a natural hollow or sinus within the body)