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to let in
[phrase form: let]
01
to let something or someone enter a place
02
to permit the passage of water, air, or light through a hole or opening in something
Example
Please let in some fresh air, the room is stuffy.
She refused to let in the stranger at the door.
The open window let in a cool breeze.
The unlocked window let in a cool breeze on the warm summer evening.
The torn fabric of the curtains let in unwanted light from outside.
