My grandmother gave me an amulet that she said would bring good luck.

amulet 是名词，指"护身符"或"辟邪物"，通常是小巧的饰品或物件，人们相信它能带来好运或保护佩戴者免受伤害。这个词源自拉丁语 amuletum，意思是"防御物"或"保护装置"。