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
If you take up texting and social media late in life, there’s a lot to learn! A twenty-something wants advice getting her dad up to speed on memes, Instagram, and animated images. Plus, when you’re on a long road trip, what do you call...
According to an 1875 dictionary of the Sussex dialect from southeastern England, January butter means “mud.” This is part of a complete episode. Transcript of “Don’t Track That January Butter in the House!” Here’s another of...