D defs.my
Entry 2 senses Webster, 1913

Anonym

· An·o·nym · IPA /ˈæn.ə.nɪm/
01 n. One who is anonymous; also sometimes used for “pseudonym.”
  1. 1.
    One who is anonymous; also sometimes used for “pseudonym.”
  2. 2.
    A notion which has no name, or which can not be expressed by a single English word.[R.]