verbs
examine so as to determine accuracy, quality, or condition
"check the brakes"; "Check out the engine"
announce one's departure from a hotel
is a type of (narrower)
announce one's presence
"I report to work every day at 9 o'clock"
be verified or confirmed; pass inspection
"These stories don't check!"
trace
"We are running down a few tips"
record, add up, and receive payment for items purchased
"She was checking out the apples that the customer had put on the conveyer belt"
entails
obtain by purchase; acquire by means of a financial transaction
"The family purchased a new car"; "The conglomerate acquired a new company"; "She buys for the big department store"
withdraw money by writing a check
try to learn someone's opinions and intentions
"I have to sound out the new professor"