8 letters · 12 points in Scrabble
noun a large and strong and heavyset man
originFrom strap + -er, principally strap + -er (agent noun suffix). The sense referring to a poorly producing milk cow (from strap + -er) came from a dialectal sense of the verb strap as a troponym of milk: not even the most skilful milking action could coax enough milk from the udder.
Etymology from Wiktionary, CC BY-SA 3.0