1. a freight car that is equipped with refrigeration system;
The Collaborative International Dictionary of English v.0.48:
Refrigerator \Re*frig"er*a`tor\ (-?`t?r), n.
That which refrigerates or makes cold; that which keeps cool.
(a) A box or room for keeping food or other articles cool,
usually by means of ice.
(b) An apparatus for rapidly cooling heated liquids or
vapors, connected with a still, etc.
Refrigerator car (Railroad), a freight car constructed as a
refrigerator, for the transportation of fresh meats, fish,
etc., in a temperature kept cool by ice.
WordNet (r) 3.0 (2006):
n 1: a freight car that is equipped with refrigeration system