What is a connection checkout in Hibernate c3p0?

Question

I am looking at the documentation of c3p0 where they have coined the term connection checkout, can someone explain what it means?

Answer 1

If you Ctrl-F the document, you'll find

just prior to being handed to clients on checkout, just prior to being returned to the pool on check-in.

Check-out means getting a connection from the pool.

Check-in means giving back a connection to the pool.