underlever

English

Etymology

under- +‎ lever

Noun

underlever (plural underlevers)

1. A lever behind the trigger guard of a rifle
   • 1957, Walter Harold Black Smith, Gas, Air, and Spring Guns of the World, page 113:

     Incidentally, the current underlevers developed and produced after World War II are vastly improved over the prewar types, though millions of the latter are still used.

2. A particular piano component.
   • 1996, Susan Goldenberg, Steinway from Glory to Controversy: The Family, the Business, the Piano:

     The wippen, a mechanism of underlevers, controls the jacks that push the hammers up to the strings.

   • 2008, Marty C. Flinn, The Complete Idiot's Guide to Buying a Piano, page 113:

     The second assembly is the underlever / damper assembly which comprises all the linkage that activates the damper system, which stops the tone when the key is pressed.