Slap² n[C] 1. a quick hit with the flat part of your hand 2. an action that seems to be deliberately intended to offend or upset someone.

On¹ prep 1. touching or being or being supported by a particular surface.

Da¹ inform 1. used before the name of a thing that represents a particular activity.

Face¹ n[C] 1. the front part of the head from the chin to the forehead.