swink
To labour, to work hard
archaic, intransitive
Honour, estate, and all this worldes good, / For which men swinck and sweat incessantly
To cause to toil or drudge; to tire or exhaust with labor.
archaic, transitive
And the swinked hedger at his supper sat.
Where it comes from
From Middle English swynken, from Old English swincan (“to labour, work”), from Proto-Germanic *swinkaną (“to swing, bend”). Cognate with Old Norse svinka (“to work”).
Adapted from the Wiktionary entry swink (CC BY-SA 4.0).