n. A small rock-inhabiting fern (Asplenium trichomanes) of the North temperate zone and Hawaii, having pinnate fronds. [ WordNet 1.5 ]
n. [ Spleen + wort; cf. L. splenium, asplenium, Gr. &unr_;&unr_;&unr_;&unr_;, &unr_;&unr_;&unr_;&unr_;, &unr_;&unr_;&unr_;. ] (Bot.) Any fern of the genus