7 letters · 14 points in Scrabble
noun a crunching noise
verb make a noise typical of an engine lacking lubricants
verb sit on one's heels
originAttested since about 1800. Probably an intensive form of crunch; ultimately derived from the onomatopoeia of a crumpling sound; or perhaps a blend of squeeze + crunch.
Etymology from Wiktionary, CC BY-SA 3.0