amendment

noun

1. (countable, uncountable)An alteration or change for the better; correction of a fault or of faults; reformation of life by quitting vices.
2. (countable, uncountable)In public bodies, any alteration made or proposed to be made in a bill or motion that adds, changes, substitutes, or omits.

   “Arrests and prosecutions intensified after Isis captured Mosul in June, but the groundwork had been laid by an earlier amendment to Jordan’s anti-terrorism law.”

   “Almost half of MEPs wanted to remove the new provisions to expand the use of megatrucks but an amendment to do that failed to pass by just six votes.”

3. (countable, uncountable)Correction of an error in a writ or process.
4. (US, countable, especially, uncountable)An addition to and/or alteration to the Constitution.

   “The First Amendment guarantees freedom of religion, speech, press, assembly, and petition.”

   “The Thirteenth Amendment to the United States Constitution abolished slavery.”

5. (countable, uncountable)That which is added; that which is used to increase or supplement something.

   “a soil amendment”