commutation ticket

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A ticket issued at a reduced rate by a railroad or other transportation company for passage over a given route for a specified number of trips.

from The Century Dictionary.

• noun A ticket issued at a reduced rate by a carrier of passengers, entitling the holder to be carried over a given route a limited number of times, or an unlimited number during a certain period.

from the GNU version of the Collaborative International Dictionary of English.

• A ticket for transportation at a reduced rate in consideration of some special circumstance, as increase of travel; specif., a ticket for a certain number of, or for daily, trips between neighboring places at a reduced rate, such as are commonly used by those doing business in a city and living in a suburb. Commutation tickets are excepted from the prohibition against special rates contained in the Interstate Commerce Act of Feb. 4, 1887 (24 Stat. 379), and in 145 U. S. 263 it was held that party tickets were also excepted as being “obviously within the commuting principle.”

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a ticket good for several trips or to attend a season of entertainments; sold at a reduced rate