1. countersignal - Noun
2. countersignal - Verb
countersignal (plural countersignals)
A signal produced in response to another signal.
countersignal (third-person singular simple present countersignals, present participle (UK) countersignalling or (US) countersignaling, simple past and past participle (UK) countersignalled or (US) countersignaled)
(sociology) To send a false or misleading signal.