1. Plural of kingside; in chess, the side of the board containing the king's file (the e-file) and the squares to its right (from White's perspective: the f-, g-, and h-files).
Usage: chess terminology; typically used in the phrase 'kingside attack' or 'kingside castling'

Examples

• White launched a fierce kingside attack in the middlegame.
• The player castled kingside to secure the king's safety.
• Black's kingside pawn structure was weakened after the exchange.
• Both players focused their piece activity on the kingsides of their respective positions.
• The kingside rook became very active in the endgame.