
1) Toothed machine wheel
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https://www.crosswordclues.com/clue/bevel-gear

Bevel gears are gears where the axes of the two shafts intersect and the tooth-bearing faces of the gears themselves are conically shaped. Bevel gears are most often mounted on shafts that are 90 degrees apart, but can be designed to work at other angles as well. The pitch surface of bevel gears is a cone. ==Introduction== Two important concepts i...
Found on
http://en.wikipedia.org/wiki/Bevel_gear

• A kind of gear in which the two wheels working together lie in different planes, and have their teeth cut at right angles to the surfaces of two cones whose apices coincide with the point where the axes of the wheels would meet.
Found on
http://thinkexist.com/dictionary/meaning/bevel_gear/

(from the article `automobile`) ...gear train that serves as an equalizer in dividing the torque between the two driving wheels while permitting one to turn faster than the other ... ...and parallel to the shaft axes (spur gears) or by gears with twisted, screwlike teeth (helical gears). Intersecting shafts are connected by gears ... ...
Found on
http://www.britannica.com/eb/a-z/b/58

A straight-toothed gear with the teeth cut on sloping faces and the gear shafts at an angle (normally a right angle)
Found on
http://www.encyclo.co.uk/local/21121
Bev'el gear` (Mech.) A kind of gear in which the two wheels working together lie in different planes, and have their teeth cut at right angles to the surfaces of two cones whose apices coincide with the point where the axes of the wheels would meet.
Found on
http://www.encyclo.co.uk/webster/B/44

In mechanics, a bevel gear is a kind of gear in which the two wheels working together lie in different planes, and have their teeth cut at right angles to the surfaces of two cones whose apices coincide with the point where the axes of the wheels would meet.
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http://www.probertencyclopaedia.com/browse/GB.HTM

[
n] - gears that mesh at an angle
Found on
http://www.webdictionary.co.uk/definition.php?query=bevel%20gear
pinion and crown wheel noun gears that mesh at an angle
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https://www.encyclo.co.uk/local/20974

a gear having teeth cut into a conical surface, usually meshing with a similar gear set at right angles. Cf. hypoid gear.
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https://www.infoplease.com/dictionary/bevel-gear
No exact match found.