Axilla

Chamber's Twientieth Century Dictionary · 1908 · p. 10

aks′il-la, n. ( an at. ) the armpit.— ns. Ax′ill a , Ax′il ( bot. ), the angle between the upper side of a branch and the trunk, or a petiole and the stem it springs from.— adjs. Ax′illar , Ax′illary . [L. axilla , the armpit.]