1. noun /ˈpluːm/
b) The rearmost appendage of certain dog breeds that stand erect or curl over their backs (eg Samoyed, Malteagle)
2. verb /ˈpluːm/
Smoke plumed from his pipe then slowly settled towards the floor.
We mention this observation, not with any view of pretending to account for so odd a behaviour, but lest some critic should hereafter plume himself on discovering it.
Wikipedia foundation.