speed bump
n.— «So he began looking down a series of alleys perpendicular to a main road. Turning down one of them, his driver struck a roadway bomb, the kind soldiers call “speed bumps” or “stop-and drop” bombs because they’re laid down in the street like sandbags. “The driver of the Bradley we were looking for couldn’t back up, either, because there was another speed bump,” Rodriguez said» —“3 soldiers get Silver Stars” by Gina Cavallaro in Baghdad, Iraq Army Times Feb. 14, 2008. (source: Double-Tongued Dictionary)
Further reading
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