To make the sound of squirting water, like that made by the feet of one walking in mud or slush; to make a kind of gushing, swashing, or splashing sound; to move with such a sound.

walk through mud or mire; "We had to splosh across the wet meadow"

put (a liquid) into a container or another place by means of a squirting action

Squish is both the name of a Fido Net mail tossing application originally designed for DOS and OS/2, and the name of the primary mail storage format in which this application stores FidoNet and other local BBS messages. Before Squish, open storage formats for FidoNet and Bulletin Board messages were relatively slow and inefficient.

Squish is a character on the science fiction series LEXX.

Organised turbulence in the combustion chamber caused by a final squeeze on the compressed fuel mixture as the piston reaches top dead centre.