葉腋
Axil \Ax"il\, n. [L. axilla. Cf. {Axle}.] (Bot.)
The angle or point of divergence between the upper side of a
branch, leaf, or petiole, and the stem or branch from which
it springs. --Gray.
axil
n : the upper angle between an axis and an offshoot such as a
branch or leafstalk