Meaning of LIP SYNC

WordNet Dictionary
	Definition:		[n]  combining audio and video recording in such a way that the sound is perfectly synchronized with the action that produced it; especially synchronizing the movements of a speaker's lips with the sound of his speech [v]  move the lips in synchronization (with recorded speech or song)
	Websites:
	Synonyms:		lip synch, lip synchronisation, lip synchronization, lip-synch
	See Also:		mouth, recording, transcription