pack (someone or something) in

phrase

1

: to cause (someone or something) to fit into a small space

We were packed in the tiny room like sardines.

trying to pack one more thing in an already stuffed suitcase

2

: to cause (large groups of people) to come to a show or performance

His show still packs in (the) crowds.

The movie has been packing them in at theaters across the country.

3

: to put (a large amount of something) into (something)

She packs a lot of information in her short essays.

4

US, informal : to stop using (something) forever

She isn't packing in her skis just yet.

I decided to pack in my paintbrushes and go to business school.

5

British, informal : to give up doing (something)

He packed in his job and became a farmer.

They might pack in the project altogether.