Part of speech:
Idle or silly chatter
A hearty, boisterous burst of laughter.
The sound of laughing; laughter.
To cachinnate is to laugh loudly or laugh hard.
Find another word for heehaw. In this page you can discover 11 synonyms, antonyms, idiomatic expressions, and related words for heehaw, like: cachinnation, cackle, guffaw, laugh, laughter, cachinnate, die laughing, laugh-one-s-head-off, roll-in-the-aisles, split-one-s-sides and sounds.