Definition from Wiktionary, the free dictionary
See also plūme
plume (plural plumes)
- A feather of a bird, especially a large or showy one.
- The furry tail of certain dog breeds that stand erect or curl over their backs (eg Samoyed, Malteagle)
- A cluster of feathers worn as an ornament, especially on a helmet.
- An upward spray of water or mist.
- (geology) An upwelling of molten material from the Earth's mantle.
- (astronomy) An arc of glowing material erupting from the surface of a star.
Derived terms 
cluster of feathers
geology: upwelling of molten material
astronomy: arc of glowing material
- (intransitive) To preen and arrange feathers.
- (intransitive) To congratulate oneself proudly.
- To form a plume
- Smoke plumed from his pipe then slowly settled towards the floor.
- To write; to pen.
to preen and arrange feathers
plume f (plural plumes)
- first-person singular present indicative of plumer
- third-person singular present indicative of plumer
- first-person singular present subjunctive of plumer
- third-person singular present subjunctive of plumer
- second-person singular imperative of plumer
Old French 
- English: plume