noun.
A feather, especially a large and showy one.
noun.
A large feather, cluster of feathers, or similar ornament worn on a helmet, hat, or horse's harness.
noun.
A token of honor or achievement.
noun.
A mass or stream of material that resembles a long feather.
noun.
An area or section of air, water, or soil containing pollutants released from a point source.
noun.
An upwelling of molten material from the earth's mantle.
transitive verb.
To decorate, cover, or supply with a plume or plumes.
transitive verb.
To smooth or clean (feathers) with the bill or beak; preen.
transitive verb.
To congratulate (oneself) in a self-satisfied way.
intransitive verb.
To rise or emanate in a plume.