A move by a pawn or piece that removes from the board the opponent's pawn or piece. The capturing piece then occupies the square of the captured piece (except in the case of a capture that is done en passant).

(Or Take) not Kill – to remove a piece from the board via a legal move.

Moving a piece to a square occupied by an enemy piece, thereby removing the enemy piece from the board, out of play. Once a piece is captured, it may never return to the game.