push button

from WordNet (r) 3.0 (2006)

push button
    n 1: an electrical switch operated by pressing; "the elevator
         was operated by push buttons"; "the push beside the bed
         operated a buzzer at the desk" [syn: {push button}, {push},
         {button}]

from The Collaborative International Dictionary of English v.0.48

Push button \Push button\ (Elec.)
   A simple device, resembling a button in form, so arranged
   that pushing it closes an electric circuit, as of an electric
   bell; -- called also {button}.
   [Webster 1913 Suppl.]

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