close in

US /kloʊz ɪn/
UK /kloʊz ɪn/
"close in" picture
1.

to surround or enclose something or someone, often in a threatening or restrictive way

:
The fog began to close in, making visibility very poor.
The police are closing in on the suspects.
2.

to approach the end of a period of time or an event

:
As winter began to close in, the days grew shorter and colder.
The deadline is closing in fast.