window/door, etc. 1[transitive, intransitive] close (something) to put something into a position so that it covers an opening; to get into this position ...

[transitive, intransitive] close (something) to put something into a position so that it covers an opening; to get into this position synonym shut.

near; 1[not usually before noun] close (to somebody/something) close (together) near in space or time Our new house is close to the school.

the end of a period of time or an activity at the close of the 17th century His life was drawing to a close. Can we bring this meeting to a close?

There are 14 meanings listed in OED's entry for the noun close, six of which are labelled obsolete. See 'Meaning & use' for definitions, usage, and quotation ...

to almost reach or do something He'd come close to death. We didn't win, but we came close. The welfare state never came close to eliminating poverty.

[not usually before noun] near in space or time. I had no idea the beach was so close. close to somebody/something Our new house is close to the school.

There are 50 meanings listed in OED's entry for the word close, six of which are labelled obsolete. See 'Meaning & use' for definitions, usage, and quotation ...

the end of a period of time or an activity. at the close of the seventeenth century; His life was drawing to a close. Can we bring this meeting to a close?

[not before noun] shut, especially of a shop or public building that is not open for a period of time.