chatter bump
n.— «At the other end of the mud course was also a sharp left-hand turn with simulated chatter bumps on the pavement.» —“Dishing the dirt on safe winter driving” by Howard J. Elmer Toronto Star (Can.) Oct. 11, 2003. (source: Double-Tongued Dictionary)
Further reading
Diamond dust, tapioca snow, and sugar icebergs — a 1955 glossary of arctic and subarctic terms describes the environment in ways that sound poetic. And a mom says her son is dating someone who’s non-binary. She supports their relationship, but...
When there’s no evening meal planned at home, what do you call that scramble to cobble together your own dinner? Some people apply acronyms like YOYO — “you’re on your own” — or CORN, for “Clean Out your Refrigerator...