What is Dab ?
Dab is (verb) to give something a light tap She dabbed her eyes with her handkerchief. She dabbed the cut with cotton wool soaked in antiseptic. Synonym pat to dab something on to apply something by pressing lightly You can dab the paint on with a little brush. (noun) 1. a small quantity She put a dab of glue on each corner of the poster. 2. a little tap The nurse gave the cut a dab with some cotton wool. 3. a type of small flat fish
source: Easier English, Student Dictionary Upper Intermediate Level