The name Collier is a boy's name of English origin meaning "coal miner". Collier and is often added to lists like Occupational Baby Names and discussed in our forums with posts like "A brother or sister for little Jack or Olivia".
From the experts:
This occupational surname could find new life with those wishing to honor someone in their heritage who was connected to the tough-as-nails breed that was the pre-modern coal miner. Coll and Collie are some sweet nickname options to tone down the formality of this name.