Real Dictionary

squelch
verb: To squelch means to make a wet, sucking sound, like the sound you make when you are walking on wet, muddy ground.

squelch in American English
the sound of liquid, mud, slush, etc. moving under pressure or suction, as in wet shoes
to crush or smash by or as by falling or stamping upon; squash
to walk heavily, as through mud, making a sucking sound
intransitive verb: to make a splashing sound
noun: a squelched or crushed mass of anything
transitive verb: to strike or press with crushing force; crush down; squash

squelch in British English
noun: a squelching sound
verb: to walk laboriously through soft wet material or with wet shoes, making a sucking noise