What does "egret" mean?

Egret: A plume or tuft of feathers worn as a part of a headdress, or anything imitating such an ornament; an aigrette.

Additional senses

  1. 2.(Bot.) The flying feathery or hairy crown of seeds or achenes, as the down of the thistle.
  2. 3.(Zoöl.) A kind of ape.

Sources