from The American Heritage® Dictionary of the English Language, 4th Edition
- transitive v. To squeeze or crush together or into a flat mass; squash.
- intransitive v. To emit the gurgling or sucking sound of soft mud being walked on.
- n. A squishing sound.
- n. Slang A person regarded as weak and ineffective.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A political moderate (derogatory term used by conservative activists in the 1980s)
- v. To squeeze, compress, or crush.
from the GNU version of the Collaborative International Dictionary of English
- intransitive v. 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.
- n. A sound like that made by the feet of one walking in mud or slush; a gushing, swashing, or splashing sound; a squishing sound.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- v. walk through mud or mire
- n. the noise of soft mud being walked on
- v. put (a liquid) into a container or another place by means of a squirting action
Probably alteration of squash2.(American Heritage® Dictionary of the English Language, Fourth Edition)