(n) A small, brownish-grey troll-type creature, found in city sewers--or in swamps. (v) To squat, scurry, or crawl in the manner of the squarg. Example: The best method of moving through small pipes is to slowly squarg through it sideways.
SQUARG
Meaning of SQUARG in English
Slang English vocab. Английский сленговый словарь. 2012