damper · noun1
From damp (verb) + -er. The name of the type of bread is first attested in 1825, and originally likely refers to damping the appetite.
damper · adjective2
Etymology from Wiktionary, CC BY-SA 4.0.
damper
Today it means: A valve or movable plate in the flue or other part of a stove, furnace, etc., used to check or regulate the draught of air. Full definition →