Botts dots

American  

[bots] / bɒts /

plural noun

Slang.

1. small, protruding, reflecting ceramic tiles used on some roads instead of painted lines to mark lanes.

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Etymology

Origin of Botts dots

First recorded in 1965–70; named after Elbert D. Botts (1893–1962), U.S. chemist, who developed them

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