Squelch (?), v. i. [Perh. imitative. Cf. Squelch.] To make a sound like that made by the feet of one walking in mud or slush; to make a kind of swashing sound; also, to move with such a sound.
He turned and strode to the fire, his boots squelching as he walked. P. L. Ford.
A crazy old collier squelching along under squared yards. W. C. Russell.