Definition of Woodruff key in English:

Woodruff key

noun

  • A key whose cross section is part circular, to fit into a curved keyway in a shaft, and part rectangular, used chiefly in machinery.

Origin

Late 19th century: named after the Woodruff Manufacturing Company, Hartford, Connecticut.

Pronunciation:

Woodruff key

/ˈwo͝odrəf ˌkē/