noun (plural axillae /akˈsɪliː/)
1 Anatomy An armpit, or the corresponding part in a bird or other animal.
- The T2 nerve root controls the palms on either side and the T4 nerve root controls the axilla and armpit.
- A holosystolic murmur that may radiate to the axilla, the upper sternal borders or the subscapular region is apparent on physical examination.
- Extremities showed tenderness over the right shoulder and axilla.
Early 17th century: from Latin, diminutive of ala 'wing'.
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