An offering made to an adversary in the hope of obtaining peace or reconciliation; an olive branch
You can use peace offering to refer to something that you give someone to show that you want to end the quarrel between you. `A peace offering,' Roberts said as he handed the box of cigars to Cohen. An offering made to an adversary in the interests of peace or reconciliation. something you give to someone to show them that you are sorry and want to be friendly, after you have annoyed or upset them