amend·ment
 /əˈmɛndmənt/  noun  ,  pl   -ments
  1 [  count  ] : a change in the words or meaning of a law or document (such as a constitution)
   constitutional amendments
  — often + to
   They proposed an amendment to the law. [=they officially suggested that a change be made to the law]
   an amendment to section 37(a) of the tax code
  ◇ The names of the amendments that have been made to the U.S. Constitution are usually capitalized.
   The first 10 Amendments to the Constitution of the United States are called the Bill of Rights.
   Our right to free speech is protected by the First Amendment (of the U.S. Constitution).
  2 [  noncount  ] : the act or process of changing the words or meaning of a law or document : the act or process of amending something
   rights that were granted by amendment of the Constitution