Definition of unkey in English:

unkey

Pronunciation /(ˌ)ʌnˈkiː/

verb

  • 1rare To remove the keystone from (an arch, etc.). Also in extended use. Compare "key".

  • 2rare To unfasten by removing a pin, wedge, bolt, etc. Compare "key".

  • 3To set (a transmitter, microphone, etc.) to stop transmitting.

Origin

Late 17th century; earliest use found in 13th Volume Wren Society. From un- + key.