trĭfurcus — Lewis & Short
trĭfurcus, a, um, adj.ter-furca,
I having three forks, prongs, or points, threeforked, three-pronged:
surculi,Col. 5, 11, 7:
stirps,id. 5, 10, 7:
semina,id. Arb. 20, 2.