waffle iron

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun An appliance having hinged indented plates that impress a grid pattern into waffle batter as it bakes.

from The Century Dictionary.

• noun An iron utensil for baking waffles over a fire, having two flat halves hinged together, one to contain the batter, the other to cover it.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A cooking appliance, with hinged, indented metal plates, used to make waffles.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a kitchen appliance for baking waffles; the appliance usually consists of two indented metal pans hinged together so that they create a pattern on the waffle