check out

verb10

1. •
   To examine, inspect, look at closely, ogle; to investigate; to gather information so as to make a decision.

   • He was hanging out at the beach, checking out the young women in bikinis.
   • He checked out the rumor, and managed to verify that it was true.
2. •
   To record the departure or withdrawal of someone or something (such as guests, employees, books, etc.).

   • He checked his favorite mystery out for the twenty-third time.
   • The desk clerk checked out the family that had been staying in room 322.
3. •
   To record one's departure from a workplace, hotel, restaurant, etc.

   • Be sure to check out of the hotel before noon.
   • I'm done shopping, so I'll go check out now.
4. •
   To obtain source code (or other material) from a source control repository so that one can modify it (and often later check in the modified version).
5. •
   To prove (after an investigation) to be the case, or to be in order.

   • The first two leads check out; I'll assume the third one is also valid.
   • Their stories checked out.
6. •
   To become uninterested in an activity and cease to participate in more than a perfunctory manner; to become uncooperative.
7. •
   To become catatonic or otherwise nonresponsive.

   • Even during those years, there would be a lot of times she just checked out. She would be sitting there looking at her nails and she'd just be gone. — 2007
8. •
   (euphemistic) To die.

   • With a bottle full of sleeping pills and a long list of sins She'd already planned on checking out before she checked in — 2012
9. •
   To leave in a hurry.
10. •
    To visit the oche for the last time and clear one's remaining points to win the game.