Definition of plume
1
:a feather of a bird: such as
a
:a large conspicuous or showy feather
c
:plumage
d
:a cluster of distinctive feathers
2 a
:material (such as a feather, cluster of feathers, or a tuft of hair) worn as an ornament
b
:a token of honor or prowess :prize
3
:something resembling a feather (as in shape, appearance, or lightness): such as
a
:a plumose appendage of a plant
b
:an elongated and usually open and mobile column or band (as of smoke, exhaust gases, or blowing snow)
c
:an animal structure having a main shaft bearing many hairs or filamentous parts;
especially
:a full bushy tail
d
:any of several columns of molten rock rising from the earth's lower mantle that are theorized to drive tectonic plate movement and to underlie hot spots
