to touch something with quick light touches, or to put a substance on something with quick light touches

She dabbed at her eyes with a tissue. 她用面巾纸轻轻地擦了擦眼睛。

She dabbed a little perfume behind her ears. 她在耳朵后面点了些香水。

a small amount of a substance, or a light touch

Can't you just put a dab of paint over the mark and cover it up? 你就不能在那块污迹上抹点油漆把它盖住吗？

I'll give that stain a quick dab with a wet cloth. 我会用湿布轻擦一下那个污点的。