Definition of Allen wrench in English:

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Allen wrench

Pronunciation: /ˈalən ˌrenCH/
(also allen wrench)

noun

trademark
An L-shaped metal bar with a hexagonal head at each end, used to turn bolts and screws having hexagonal sockets.
Example sentences
  • Presumably it arrived in a flat pack with instructions and an Allen key.
  • However, there are some differences in how the blades are changed, ranging from a hex-head set screw that requires an Allen wrench to a simple flip-lever design that does need a tool.
  • Packing a small adjustable spanner and a set of Allen keys will make sure you can do those last-minute running repairs.

Origin

1960s: from the name of the manufacturer, the Allen Manufacturing Company, of Hartford, Connecticut.

For editors and proofreaders

Syllabification: Al·len wrench

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