quacker

Noun

 * 1) One who quacks.
 * 2) * 1901–1947: Benjamin Albert Botkin, A Treasury of New England Folklore: Stories, Ballads, and Traditions of the Yankee People
 * The decoy was what the townsman who had lent it to him called a "first-class quacker." The decoy quacked and swam about
 * 1)  A playing card with the rank of two; a duck.