In cricket, a ball which after it has pitched alters its course, or twists, as viewed by the bowler, from left to right: such a ball is said to ‘break from the off.’(noun)
The Century Dictionary (Public Domain)
Use "off-break" in a sentence
"That was achieved by Rayner in his first over with a perfectly pitched off-break that the former England left-hander edged to slip."
"Starting for Sussex as an off-break bowler before the first world war, his career did not really get under way for nearly a decade and he was thinking of giving up bowling when one day in 1922 he bowled a few faster balls in the nets to his captain, Arthur Gilligan, and knocked over his stumps."
"It is very difficult to read Murali's bowling in the air because, unlike most off-spinners, the ball always has a scrambled seam, whether it is a doosra or an off-break."