noun
[noncount] something light and soft: such as
small balls or pieces of thread, fiber, or dust
soft fur or feathers
chiefly US informal :something that has little importance or interest
verb
fluffs; fluffed; fluffing
[+ obj] to shake or move (something, such as a pillow) so that it is fuller, lighter, or softer
informal :to do (something) badly :flub