check out (Noun) — The act of inspecting or verifying.
check out (Noun) — The latest time for vacating a hotel room. ex. "the checkout here is 12 noon"
check out (Noun) — A counter in a supermarket where you pay for your purchases.
check out (Verb) — Examine so as to determine accuracy, quality, or condition. ex. "Check out the engine"
check out (Verb) — Announce one's departure from a hotel.
check out (Verb) — Be verified or confirmed; pass inspection. ex. "These stories don't check out!"
check out (Verb) — Trace. ex. "We are checking out a few tips"
check out (Verb) — Record, add up, and receive payment for items purchased. ex. "She was checking out the apples that the customer had put on the conveyer belt"
check out (Verb) — Withdraw money by writing a check.
check out (Verb) — Try to learn someone's opinions and intentions. ex. "I have to check out the new professor"