Definitions

1. noun

a container, usually a box or a compartment, in a locomotive or a vehicle, used to hold the smoke from the chimney or exhaust, often with the purpose of reducing smoke emission or improving visibility.

“The engineer adjusted the settings on the locomotive’s smokebox to reduce the visible smoke.”

2. verb

to remove or reduce smoke from a source, often using a smokebox or a similar device.

“The mechanic smokeboxed the engine to prepare it for its first test run.”