lock in

Verb	1.	lock in - close with or as if with a tight seal; "This vacuum pack locks in the flavor!" Synonyms: seal in
	2.	lock in - place in a place where something cannot be removed or someone cannot escape; "The parents locked her daughter up for the weekend"; "She locked her jewels in the safe" Synonyms: lock away, put away, shut away, shut up, lock up, lock

confine, seal in