I. ˈ ̷ ̷ ̷ ̷ˌ ̷ ̷ adjective
Etymology: in sense 1, from under (II) + arm, n.; in sense 2, from under (III) + arm, n.
1. : placed under or on the underside of the arm
underarm seams
underarm handbag
2. : underhand
underarm bowling
underarm pitching delivery
underarm pass in basketball
II. | ̷ ̷ ̷ ̷| ̷ ̷ adverb
Etymology: under (III) + arm
: underhand
learning to throw underarm