Source : Webster's Revised Unabridged Dictionary (1913)

Musci \Mus"ci\, n. pl. [L. muscus moss.] (Bot.)
   An order or subclass of cryptogamous plants; the mosses. See
   {Moss}, and {Cryptogamia}.

Source : WordNet®

Musci
     n : true mosses: bryophytes having leafy rather than thalloid
         gametophytes: comprises orders Andreaeales; Bryales;
         Dicranales; Eubryales; Sphagnales [syn: {Bryopsida}, {class
         Bryopsida}, {class Musci}]