in

Used to indicate location, inclusion, or position within spatial, temporal or abstract limits.

The dog is in the kennel.

There were three pickles in a jar.

Used to indicate location, inclusion, or position within spatial, temporal or abstract limits.

I like living in the city.

There are lots of trees in the park.

Used to indicate location, inclusion, or position within spatial, temporal or abstract limits.

We are in the enemy camp.

Her plane is in the air.

Used to indicate location, inclusion, or position within spatial, temporal or abstract limits.

I glanced over at the pretty girl in the red dress.

Who’s the blonde in the sunhat over there?

Used to indicate location, inclusion, or position within spatial, temporal or abstract limits.

There wasn't much of interest in her speech.

He hasn't got an original idea in him.

To enclose.

To take in; to harvest.

He that ears my land spares my team and gives me leave to in the crop.

At or towards the interior of a defined space, such as a building or room.

Suddenly a strange man walked in.

Would you like that to take away or eat in?

Towards the speaker or other reference point.

They flew in from London last night.

For six hours the tide flows in, then for another six hours it flows out.

So as to be enclosed or surrounded by something.

Bring the water to the boil and drop the vegetables in.

After the beginning of something.

The show still didn't become interesting 20 minutes in.

The Black Cats had a mountain to climb after James Morrison's header and Shane Long's neat side-foot finish gave Albion a 2-0 lead five minutes in.

Denotes a gathering of people assembled for the stated activity, sometimes, though not always, suggesting a protest.

sing-in, pray-in, hug-in; see also be-in, love-in, sit-in, teach-in.