An inbound pass in basketball is when the ball is thrown from an out-of-bounds player to a player on the court, this puts the ball in play. Another method of putting the ball into play is with a jump ball or rebound. Inbound passes only happen when the ball goes out of bounds, or after the other team scores.
The inbounder has 5 seconds to inbound the basketball once they are given the ball by the referee. If the inbounder is inbounding it from their baseline after the other team scored, the inbounder can run side to side along the out-of-bounds line.
The defensive player can move side to side and jump to block the inbound pass. However, they may not reach over the out-of-bounds line. If they do this and touch the ball, they can get a technical foul.