go in

phrasal verb [intransitive]
Word forms "go in":
present tense I/you/we/they go in he/she/it goes in present participle going in past tense went in past participle gone in

1) when the sun or moon goes in, clouds move in front of it

2) if information goes in, you understand it

I explained to her what to do, but I could tell it hadn't really gone in.

3) if people such as police officers or soldiers go in, they enter a place in order to take some sort of action

Our unit will be going in first.