Definition of "plumper"

comparative form of plump: more plump  examples

One who plumps or swells out something else.  examples

That which plumps or swells out something else.  examples

(chiefly in the plural) A small ball or pad carried in the mouth to fill out the cheeks.  quotations  examples

In elections, a vote given to one candidate only, when two or more are to be elected, thus giving him or her the advantage over the others; a person who gives his or her vote thus is said to plump, or to plump his or her vote.  examples

A voter who plumps his or her vote.  examples

A downright, unqualified lie.  examples

(Internet slang) An obese woman, especially in pornography.