Terminal \Ter"mi*nal\, n. (Railroads)
   (a) The end of a line of railroad, with the switches, stations, sheds, and other appliances pertaining thereto.
   (b) Any station for the delivery or receipt of freight lying too far from the main line to be served by mere sidings.
   (c) A rate charged on all freight, independent of the distance, and supposed to cover the expenses of station service, as distinct from mileage rate, generally proportionate to the distance and intended to cover movement expenses; a terminal charge.
   (d) A town lying at the end of a railroad; -- more properly called a terminus.

Source: Webster's Revised Unabridged Dictionary (1913)
 

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 line.

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

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

Source: Webster's Revised Unabridged Dictionary (1913)