0 to take the items you have bought, esp. in a large food store, to an area where you pay for them: --
I had already checked out when I remembered that we were out of milk.
1 to examine something or visit a place in order to learn about it: --
2 (of information) to seem to be true because it agrees with other information, or to discover whether information agrees with other information and is therefore likely to be true: --
Her statement checks out with most of the eyewitness reports.
The commissioner sent an investigator to check out the rumors.
3 to borrow a book or something else from a library (= a place with a collection of books, music, etc.): --
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.
Можем да го завършим стъпка по стъпка, колкото и дълъг да е пътят и не може да бъде завършен, колкото и кратък да е пътят, ако дори не маркирате отпечатъка си.