A type of shot in basketball in which a player jumps and shoots or releases the ball so that it lands directly over the rim, allowing it to fall into the basket.
The lay-in is similar to the layup in that a player will typically drive to or begin the move under or in front of the basket. The key difference is that the layup uses the backboard to bank in the shot, whereas the lay-in does not use the backboard at all. The player taking the shot typically jumps and simply shoots or positions the ball above the rim of the basket so that it will either drop or roll in for a score. This is different from a tip-in as the lay-in occurs in one smooth motion rather than as a result of a rebound or missed shot (although players can lay-in the ball following a rebound).