ADJECTIVE (1)

1. with the arm swung round at shoulder height;
- Example: "round-arm bowling"


ADVERB (1)

1. with an outward or horizontal swing of the arm;
- Example: "he hit the ball round-arm"

The Collaborative International Dictionary of English v.0.48:

Round-arm \Round"-arm`\, a. (Cricket)
   Applied to the method delivering the ball in bowling, by
   swinging the arm horizontally. --R. A. Proctor.
   [1913 Webster]

WordNet (r) 3.0 (2006):

round-arm
    adv 1: with an outward or horizontal swing of the arm; "he hit
           the ball round-arm"
    adj 1: with the arm swung round at shoulder height; "round-arm
           bowling"