press against (something) lightly several times with a piece of absorbent material in order to clean or dry it or to apply a substance

he dabbed his mouth with his napkin

she dabbed at her eyes with a handkerchief

strike with a light blow

perform a dance move or gesture in which one arm is bent at an angle across the chest while the other is fully extended parallel to the first arm, with the face turned towards the bent elbow

the player who dabs after touchdowns