noun

1. A cancellation (US); (nonstandard in some kinds of English).

2. An enclosure; a boundary; a limit.

3. The suppression on striking out of matter in type, or of a printed page or pages.

verb

1. To cross out something with lines etc.

2. To invalidate or annul something.

   “He cancelled his order on their website.”

3. To mark something (such as a used postage stamp) so that it can't be reused.

   “This machine cancels the letters that have a valid zip code.”

Synonyms: blacklist, belay, take care of