‖n. [ NL. ] (Zool.) A genus of limicoline birds including many species of sandpipers. See Dunlin, Knot, and Sandpiper. [ 1913 Webster ]

a. [ L. trinus triple, trini three each, fr. tres, tria, three. See Three, and cf. Trine, a. & n., Tern, a. ] Threefold. “Trinal unity.” Milton. [ 1913 Webster ]

In their trinal triplicities on high. Spenser. [ 1913 Webster ]