gambler

1. N-COUNT A gambler is someone who gambles regularly, for example in card games or on horse racing. 赌徒

There was a fellow in that casino tonight who's a very heavy gambler. 今晚那家赌场有个家伙是个嗜赌成性的赌棍。

2. N-COUNT If you describe someone as a gambler, you mean that they are ready to take risks in order to gain advantages or success. 冒险家

He had never been afraid of failure: he was a gambler, ready to go off somewhere else and start all over again. 他从不害怕失败：他是个冒险家，随时准备去别的地方重新开始。