trithing

== English == === Etymology === From Middle English trithing, tridinge, from Old English *þriðing, from Old Norse þriðjungr (“third part”). === Noun === trithing (plural trithings) (historical) a riding (one of three ancient divisions of a county in England) ==== Derived terms ==== riding (“administrative division”), trithing-mote, trithing-reeve === References === “trithing”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.