in-off

Etymology
From a reconstitution of +, as used in phrases such as, "The white has gone in off the black."

Adverb

 * 1)  Of the cue ball: (going) into a pocket, after cannoning another ball.

Noun

 * 1)  The situation where the cue ball goes into a pocket after striking the object ball.
 * He looked set to win the frame, until the in-off from the yellow.