plumps

1. To grow plump; to swell out.

   Her cheeks have plumped.

2. To make plump; to fill (out) or support; often with up.

   to plump oysters or scallops by placing them in fresh or brackish water

3. To cast or let drop all at once, suddenly and heavily.

   to plump a stone into water

4. To give a plumper (kind of vote).
5. To give (a vote), as a plumper.
6. To favor or decide in favor of something.

verb

To drop or fall suddenly or heavily, all at once.