1. a button to push in order to summon help in case of an emergency; - Example: "the circuit is operated by a panic button" - Example: "when he saw that I was angry he hit the panic button"
WordNet (r) 3.0 (2006):
panic button
n 1: a button to push in order to summon help in case of an
emergency; "the circuit is operated by a panic button";
"when he saw that I was angry he hit the panic button"