Yorkshire pudding

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

• noun A popoverlike quick bread served with roast beef, baked in the drippings of the beef.

from The Century Dictionary.

• A pudding made of batter without sweets of any kind, and baked under meat, so as to catch the drippings.

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

• noun A dish made from batter baked in fat, usually served as an accompaniment to roast beef but sometimes (in a larger form) served with other fillings or as a separate course.

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

• noun light puffy bread made of a puff batter and traditionally baked in the pan with roast beef