Applied to the method delivering the ball in bowling, by swinging the arm horizontally.(adjective)
Gnu Collaboartive International Dictionary of English: licensed under The Code Project Open License (CPOL)
Use "round-arm" in a sentence
"Pont's plan was to remould Sharma's javelin hurl into a biomechanically perfect round-arm sling, in the process creating a fast-bowling Frankenstein's monster."
"Mr. Trumble, I may add, bowls slow round-arm, with a high delivery."
"Yardy responds by bowling a wild round-arm thing at 65mph."