Webster’s Revised Unabridged Dictionary · 1913
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.
Webster’s Revised Unabridged Dictionary · 1913
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.