To wet by little dips or strokes; to spatter; to sprinkle; to moisten; to wet.

dip a foot or hand briefly into a liquid

To play in water, as with the hands; to paddle or splash in mud or water.

play in or as if in water, as of small children

To work in slight or superficial manner; to do in a small way; to tamper; to meddle.

work with in a non-serious manner; "She dabbles in astronomy"; "He plays around with investments bu he never makes any money"

using small irregular amounts of drugs in a non-dependent manner

The tipping (bottom's up) of ducks to reach weeds growing under the surface of the water. Not all kinds of duck do this.