Plume

In fashion:

• A prominent bird feather often used as an ornament
• Hackle, an ornamental plume on a uniform headdress

In literature:

• Plume (publishing), an American book publishing company
• Plumes, a 1924 novel by Laurence Stallings

In music:

• Plume (band), an electronic/punk duo
• Plume Latraverse, Canadian singer, musician, and writer
• A 2006 album by Loscil
• A song by the The Smashing Pumpkins on their album Pisces Iscariot

In science:

• Plume (hydrodynamics), the form of effluent in water or emissions in air
• Mantle plume, a geologic process associated with upwelling rock
• Plumage, the layer of feathers that cover a bird and the pattern, colour, and arrangement of those feathers

In television:

• "Plume" (Air episode), a 2005 episode of the Japanese anime Air