Noun axillary fossa has 1 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"
    --1 is a kind of cavity, bodily cavity, cavum
    --1 is a part of shoulder
    --1 has parts: axillary artery, arteria axillaris
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