英汉词典

1. 使劲拉;拽
    If you tug something or tug at it, you give it a quick and usually strong pull.

    e.g. A little boy came running up and tugged at his sleeve excitedly...
           一个小男孩跑上来，非常激动地拽着他的袖子。
    e.g. She kicked him, tugging his thick hair.
           她一边踢他，一边扯着他那浓密的头发。

2. 拖船;拖轮
    A tug or a tug boat is a small powerful boat which pulls large ships, usually when they come into a port.