What it means

1. verb try to learn someone's opinions and intentions
   “I have to sound out the new professor”
2. verb announce one's departure from a hotel
3. verb record, add up, and receive payment for items purchased
   “She was checking out the apples that the customer had put on the conveyer belt”
4. verb withdraw money by writing a check
5. verb trace
   “We are running down a few tips”
6. verb be verified or confirmed
   “These stories don't check!”
7. verb examine so as to determine accuracy, quality, or condition
   “check the brakes”