• Webster's Revised Unabridged Dictionary
    • Clacker A claqueur. See Claqueur.
    • Clacker One who clacks; that which clacks; especially, the clapper of a mill.
    • ***
Century Dictionary and Cyclopedia
    • n clacker One who or that which clacks; the clack of a mill; the clapper.
    • n clacker A rattle used to frighten birds. See clack, n., 5.
    • ***


In literature:

The boy stood under the rick before mentioned, and every few seconds used his clacker or rattle briskly.
"Jude the Obscure" by Thomas Hardy

In news:

Band in a Box musical instrument set includes a tambourine, cymbals, maracas, clacker, tone blocks, and a triangle.