Bobbing meaning : To move gently and vertically, in either a single motion or repeatedly up and down, at or near the surface of a body of water, or similar medium. To move (something) as though it were bobbing in water. To curtsy. To strike with a quick, light blow; to tap. To cut (hair) into a bob haircut. To shorten by cutting; to dock; to crop To bobsleigh. The motion of something that bobs.