What is the meaning of the word "end"?

Definitions:

(American football) a position on the line of scrimmage noun
- no one wanted to play end
(football) the person who plays at one end of the line of scrimmage noun
- the end managed to hold onto the pass
a boundary marking the extremities of something noun
- the end of town
a final part or section noun
- we have given it at the end of the section since it involves the calculus
a final state noun
- After a life of misdeeds, they came to a bad end.
bring to an end or halt verb
- They ended our friendship when they found out that we had once been convicted of a crime.
either extremity of something that has length noun
- the end of the pier
one of two places from which people are communicating to each other noun
- the phone rang at the other end
put an end to verb
- The terrible news ended our hopes that there were survivors.
the concluding parts of an event or occurrence noun
- the end was exciting
the part you are expected to play noun
- They held up their end of the bargain.
the point in time at which something ends noun
- the end of the year
the state of affairs that a plan is intended to achieve and that (when achieved) terminates behavior intended to achieve it noun
- the ends justify the means
the surface at either extremity of a three-dimensional object noun
- one end of the box was marked `This side up'