What is Sloshing?

Sloshing definition and meaning on Dictionary terms:
verb (used without object)
to splash or move through water, mud, or slush.
(of a liquid) to move about actively within a container.

verb (used with object)
to stir or splash (something) around in a fluid: to slosh the mop in the pail.
to splash (liquid) clumsily or haphazardly: She sloshed tea all over her new suit. They sloshed the paint over the wall.

watery mire or partly melted snow; slush.
the lap or splash of liquid: the slosh of waves against the shore.

a small quantity of liquid: a slosh of milk in the pail.
a watery or weak drink.