olive branch

/AA1 L AH0 V B R AE1 N CH/
noun
  1. 1

    A branch of an olive tree offered as an emblem of peace.

  2. 2

    Any symbol of peace, or a peace offering to an adversary to show goodwill and in the hope of securing peace.

verb
  1. 1

    To extend an olive branch; to make a peace offering; to attempt to restore peaceful relations.

Source: https://en.wiktionary.org/wiki/olive%20branch, https://en.wiktionary.org/wiki/olive-branch