a large, long, or conspicuous feather:
the brilliant plume of a peacock.
a soft, fluffy feather:
the plume of an egret.
any plumose part or formation.
a feather, a tuft of feathers, or some substitute, worn as an ornament, as on a hat, helmet, etc.
a feather or featherlike token of honor or distinction, especially one worn on a helmet.
a vertically or longitudinally moving, rising, or expanding fluid body, as of smoke or water.
a visible pattern of smoke resulting from emissions from a stack, flue, or chimney.
Also called mantle plume
a deep-seated upwelling of magma within the earth's mantle.