buzz, beep, whirr, click, clack, clunk, clatter, clink, achoo, bark, nay, moo, meow, hah hah, shhhh. ...Onomatopoeia is a word that is pronouned the same way as the sound it is describing.
Any word that imitates a sound such as snap, le or popDefinition: the formation of a word, as cuckoo or boom, by imitation of a sound made by or associated with its referent.