tribulation (n.) Look up tribulation at Dictionary.com
early 13c., from Old French tribulacion (12c.), from Late Latin tribulationem (nominative tribulatio) "distress, trouble, affliction" (c.200), from tribulatus, past participle of tribulare "to oppress, afflict," a figurative use by Christian writers of Latin tribulare "to press," also possibly "to thresh out grain," from tribulum "threshing sledge," from stem of terere "to rub" (see throw) + -bulum, suffix forming names of tools.