"lock" - key terms from Wikipedia

ankle lock
blish lock
camden lock
camden lock	market
canal lock
caps lock
caps lock	key
combination lock
compression lock
differential lock
distributed lock	manager
electronic differential lock
exclusive lock
flood lock
front face lock
gimbal lock
humpty lock
joint lock
kensington lock
lock
lock	and dam
lock	and dam no
lock	box
lock	file
lock	haven
lock	keepers
lock	key
lock	makers
lock	of hair
lock	picking
lock	up
master lock
master lock	challenge
omega lock
open the lock
peterborough lift lock
pin tumbler lock
pound lock
rape of the lock
scroll lock
scroll lock	key
sean lock
shift lock
sim lock
spinal lock
teddington lock
tidal lock
trigger lock
tumbler lock
waist lock