- The definition of a costumer is someone who either makes or provides costumes.
An example of costumer is someone who makes clothing for a Shakespearean play.
- A costumer is defined as something you hang clothing on.
An example of costumer is a coat rack.
- a person who makes, sells, or rents costumes
- a clothes rack or hat tree
- One that makes or supplies costumes, as for plays or masquerades.
- A clothes tree.
- costume + -er