a. [ Gr. &unr_; without name; 'an priv. + &unr_;, Eol. for &unr_; name. See Name. ] Nameless; of unknown name; also, of unknown or unavowed authorship; as, an anonymous benefactor; an anonymous pamphlet or letter. [ 1913 Webster ]
(n) a common way to make software available; users are allowed to log in as `guest' without a password and copy whatever has been made available, Syn. anonymous file transfer protocol