straint
Strain (tension of overexertion).
obsolete
That with the straint o his weasand nigh he brast
Where it comes from
Uncertain. Perhaps partly from Middle French estrainte, estreinte, from Old French estrainte, estreinte; and perhaps partly taken from a clipping of English contraint, restraint, etc. See strain.
Adapted from the Wiktionary entry straint (CC BY-SA 4.0).