n. 腋, 腋窝

[医] 腋, 腋窝

[ noun ]
the hollow under the arm where it is joined to the shoulder
<noun.body>
they were up to their armpits in water

Axilla \Ax*il"la\ ([a^]ks*[i^]l"l[.a]), n.; pl. {Axillae}
([a^]ks*[i^]l"l[=ae]). [L.] (Anat.)
The armpit, or the cavity beneath the junction of the arm and
shoulder.

2. (Bot.) An axil.