tharm

From Middle English tharm, therm, from Old English þearm (“gut, entrail, intestine”), from Proto-West Germanic *þarm (“guts”), from Proto-Germanic *þarmaz (“guts”), from Proto-Indo-European *tórmos, *torh₂mo- (“hole”), from Proto-Indo-European *ter- (“to rub, bore, twist”).
Cognate with Scots thairm (“gut, bowel, intestine”), North Frisian teerm (“bowel”), West Frisian term (“bowel”), Dutch darm (“bowel, gut, intestine”), German Darm (“gut, intestine, bowel”), Danish tarm (“bowel, gut, intestine”), Norwegian tarm (“intestine”), Norwegian Nynorsk tarm (“intestine”), Swedish tarm (“bowel, gut”), Icelandic þarmur (“bowel”), Latin trāmes (“way, path, track”), Ancient Greek τράμις (trámis, “tharm, gut”), τόρμος (tórmos, “socket, peg”). Doublet of derm.