Emily Dickinson Lexicon

TWEN'TY, a. [Sax. twenti, twentig; composed of twend, twenne, twæn, two, and Goth. tig, ten, Gr. δεκα, L. decem, W. deg. See Twain.]

1. Twice ten; as, twenty men; twenty years.
2. Proverbially, an indefinite number. Maximilian, upon twenty respects, could not have been the man. Bacon.