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lockbox
lockbox service
lockdown
locked-in syndrome
locker
locker room
locker-room
Lockerbie
locket
lockfast
locking carabiner
lockjaw
lockkeeper
locknut
lockout
Lockport
lockram
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lock in
lock in


transitive verb 
Definition:
 
1. prevent from leaving: to prevent somebody from leaving a room or building by locking the door
2. fix: to fix something at a particular level for a long period
locked in a good rate on their mortgage
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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