Meaning

noun severe spasm of pain

noun hard or painful trouble or struggle

originThe noun is probably derived partly: * from Middle English throu, throwe (“(chiefly in the plural) uterine contraction during the birth of a child; pain experienced while giving birth; suffering; a pain; emotional distress, anxiety”) [and other forms], perhaps from: ** Old English þrawu (rare), a variant of þrēa (“affliction, torment; disaster; oppression; a rebuke; severity; threat”), from…

Etymology from Wiktionary, CC BY-SA 3.0