intransitive verb
1. : to satisfy requisite forms in departing
check out of a hotel
check out of an office
2. slang : die
really checked out the hard way — Charles Burgess
3. : to become substantiated or verified : accord
his story checked out with the facts
4. : to satisfy requirements : pass a competency test : qualify
the trainee checked out all right on his first flight
transitive verb
1. : to satisfy all requirements in taking away (as in borrowing a library book or withdrawing money from a bank account)
he checked out two books from the library
would deposit sufficient cash in the bank to cover the premium, and then check it out — Mary R. Rinehart
2. : to submit examination : verify, substantiate, or gain approval for
an electronics man assigned to check out carefully the new plane's radio and radar system
all … testimony which could be checked out has turned out to be correct — Arthur Schlesinger b.1917
checked out his ideas with an expert
3. : to itemize and reckon up the total cost of and receive payment for (outgoing merchandise or services) especially in a self-service store
checking out groceries in a supermarket
employed in checking out cleaned suits in a dry-cleaning establishment