Iron

1. Lighting: The generic name given to the wide variety of lighting hardware including but not limited to:
-Pipe
-Side Arms
-C-Clamps
-Boom Bases
-Mounting Plates
-Hanging Arms
-Floor Trunnions

2. Facility: "The Iron" is how a theatre's Fire Safety Curtain is referred in the UK.

3. Costumes: (noun) A heavy hand-held electrical appliance used to remove wrinkles from fabric by pressing with heat and often also steam.
(verb) To utilize the noun form.