rat-a-tat

or rat-a-tat-tat

[ rat-uh-tat or rat-uh-tat-tat ]
/ ˈræt əˈtæt or ˈræt əˌtætˈtæt /

noun

a sound of knocking or rapping: a sharp rat-a-tat on the window.

Origin of rat-a-tat

First recorded in 1675–85; imitative

Example sentences from the Web for rat-a-tat