What is the meaning of Mahjong?

A game (originally Chinese) for four players, using a collection of tiles divided into five or six suits.

A solitaire game using the same tiles, where the player wins by removing pairs of matching exposed tiles until none remain.

mahjong (game for four)

mahjong (solitaire)

mahjong (Chinese tile game)

mahjong (Chinese tile game)

Source: wiktionary.org