A small object or charm worn around the neck to avoid bad things(such as illness, bad luck, witchcraft, etc).
1) A small cross made up of goat bone was used in the Middle Ages as an amulet to ward off evil.
2) The old woman gave her son an amulet before seeing him off.
From Latin amuletum
charm, mascot, fojo, talisman, periapt, phylactery