Wiktionary
triamond
n. (context geometry English) A polyiamond made up of three triangles.
Usage examples of "triamond".
Stout Priamond, but not so strong to strike,Strong Diamond, but not so stout a knight,But Triamond was stout and strong alike:On horsebacke vsed Triamond to fight,And Priamond on foote had more delight,But horse and foote knew Diamond to wield:With curtaxe vsed Diamond to smite,And Triamond to handle speare and shield,But speare and curtaxe both vsd Priamond in field.