6 letters · 10 points in Scrabble
noun a person who leaves a tip
noun truck whose contents can be emptied without handling; the front end of the platform can be pneumatically raised so that the load is discharged by gravity
originProbably an occupational surname for a maker of arrowheads, from an agent derivative of Middle English tippe (“head, tip”).
Etymology from Wiktionary, CC BY-SA 3.0