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.
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
3. Hence, any post or stone marking a boundary; a term. See
4. Either end of a railroad line; also, the station house, or
the town or city, at that place.