1. core lock - Noun
2. core lock - Verb
core lock (uncountable)
(aviation, mechanical engineering) Seizure of a turbine engine due to misalignment and loss of clearance between stationary and rotating components, caused by different components cooling and contracting at different rates following engine shutdown or flameout.
core lock (third-person singular simple present core locks, present participle core locking, simple past and past participle core locked)
(aviation, mechanical engineering, of a turbine engine) To experience core lock.