raithneach, f. (gs. -ní).Coll: Fern, bracken. ~ chraobhach, tree-fern. ~ chrua, hard fern. ~ ghallda, royal fern. ~ mhadra, male fern. ~ Mhuire, lady-fern. ~ rua, (i) rust-coloured, withered, fern, (ii) rusty-back. ~ uisce, water-fern. ~ a bhaint as duine, to trounce s.o. Chomh tiubh le ~, as thick as fern, very plentiful. Rath na raithní orthu! Long may they flourish!