Lock down

verb

Definitions

1.verbTo secure; make people stay locked indoors for their safety

"Police have the area locked down until the situation is all-clear."

2.verbTo limit the use of a computer network to only users with permission

3.verbTo make an arrangement secure, definite, or permanent; fix

4.verbTo cause another to enter into an exclusive romantic relationship

"It took me some time, but I finally locked her down."

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