Swink

v. i. [A-S. swincan, allied to swingan. See SWING.] To labor; to toil; to drudge; to slave. [Obs.] “For which men swink and sweat incessantly.” Spencer.

v. t. To overlabor; to cause to toil or drudge. [Obs.]

n. [A-S. swinc, geswinc.] Labor; toil; drudgery. [Obs.] Spencer.