axilla

noun

ax·il·la | \ag-ˈzi-lə,

\

plural axillae\-(ˌ)lē,

-ˌlī \ or axillas

Definition of axilla

: the cavity beneath the junction of a forelimb and the body especially : armpit

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The first known use of axilla was in 1616

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axilla

noun

ax·il·la | \ag-ˈzil-ə,

ak-ˈsil-

\

plural axillae\-(ˌ)ē, -ˌī

\ or axillas

Medical Definition of axilla

: the cavity beneath the junction of the arm or anterior appendage and shoulder or shoulder girdle containing the axillary artery and vein, a part of the brachial plexus of nerves, many lymph nodes, and fat and areolar tissue especially : armpit

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