Hypnum \Hyp"num\, n. [NL., fr. Gr. ? moss.]

(Bot.) The largest genus of true mosses; feather moss. [1913 Webster]

Source: The Collaborative International Dictionary of English v.0.48
 

Hypnum \Hyp"num\, n. [NL., fr. Gr. ? moss.]

(Bot.) The largest genus of true mosses; feather moss.

Source: Webster's Revised Unabridged Dictionary (1913)