clacking
clack-ing
noun
A sharp, short, repeated sound made by hard objects striking together.
"We heard the clacking of the typewriter."
verb
Making a sharp, short, repeated sound, often by striking hard objects together.
"Her heels were clacking on the pavement."
Thesaurus
Synonyms: click, clack, cluck, clap, clatter, brattle, tattle, gabble, prate, gibber, maunder, tittle-tattle