The Collaborative International Dictionary of English v.0.48:

Terminus \Ter"mi*nus\, n.; pl. Termini. [L. See Term.]
   1. Literally, a boundary; a border; a limit.
      [1913 Webster]

   2. (Myth.) The Roman divinity who presided over boundaries,
      whose statue was properly a short pillar terminating in
      the bust of a man, woman, satyr, or the like, but often
      merely a post or stone stuck in the ground on a boundary
      line.
      [1913 Webster]

   3. Hence, any post or stone marking a boundary; a term. See
      Term, 8.
      [1913 Webster]

   4. Either end of a railroad line; also, the station house, or
      the town or city, at that place.
      [1913 Webster]