The Collaborative International Dictionary
Round-arm
Round-arm \Round"-arm`\, a. (Cricket)
Applied to the method delivering the ball in bowling, by
swinging the arm horizontally.
--R. A. Proctor.
WordNet
round-arm
adj. with the arm swung round at shoulder height; "round-arm bowling"
adv. with an outward or horizontal swing of the arm; "he hit the ball round-arm"