1. Collar: This is the most common meaning, referring to the part of a shirt or garment that fits around the neck.
2. Necklace: This meaning refers to a piece of jewelry worn around the neck.
3. Coal Miner: In some regions, particularly in northern France, "collier" can refer to a coal miner.
4. Dog Collar: This meaning is less common, but "collier" can also refer to a collar worn by a dog.
5. "Collier" is also a surname in French.
To understand the precise meaning of "collier" in a particular sentence, you need to consider the context.