What is the meaning of Deadlock?

A standstill resulting from the opposition of two evenly matched forces; a stalemate or impasse.

An inability to continue due to two programs or devices each requiring a response from the other before completing an operation.

To cause or come to a deadlock.

deadlock

deadlock (inability to continue operating due to two processes requiring a response from one other)

deadlock

Source: wiktionary.org