What does "hand in" mean?

To give something to a responsible person.

Hand in

Common synonyms include: circulate, come across, come across with, deliver, deliver over, distribute.

verb

verb ·Rare ·Advanced level

Verb

1
To give something to a responsible person. transitive
"I found a wallet on the street, so I handed it in to the police."

"I found a wallet on the street, so I handed it in to the police."