early 13c., from O.Fr.
tribulacion (12c.), from L.L.
tribulationem (nom.
tribulatio) "distress, trouble, affliction" (c.200), from
tribulatus, pp. of
tribulare "to oppress, afflict," a figurative use by Christian writers of L.
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.