gamer
/ˈgeɪmə(r)/noun
1- a person who plays a game or games, typically a participant in a computer or roleplaying game（多指计算机游戏或角色扮演游戏中）玩游戏的人。
1.1
- N. Amer. (especially in sporting contexts) a person known for consistently making a strong effort〈北美〉（尤指体育运动中）坚持不懈的人。