slang A car left running unattended to warm the engine and cabin on a cold day, so called for the exhaust emitting from the tailpipe. Police are warning that thefts of puffer cars has been rising as the weather continues turning colder. I always see puffer cars in people's driveways first thing in the morning during winter.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.