bourbon

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

• noun A whiskey distilled from a fermented mash containing not less than 51 percent corn in addition to malt and rye.

from The Century Dictionary.

• noun A member of the last royal family of France, or of any of its branches.
• noun One who, as was said of the Bourbons, “forgets nothing and learns nothing”; hence, in United States politics, an extreme conservative; especially, one who is behind the time and is opposed to all progress: originally applied to certain members of the Democratic party.
• noun [lowercase] A kind of whisky made of wheat or Indian corn: originally limited to the corn-whisky made in Bourbon county, Kentucky.

from the GNU version of the Collaborative International Dictionary of English.

• noun A member of a family which has occupied several European thrones, and whose descendants still claim the throne of France.
• noun A politician who is behind the age; a ruler or politician who neither forgets nor learns anything; an obstinate conservative.

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

• noun A whiskey distilled from a mixture of grains in which more than half is maize, aged in oak barrels. Made chiefly in the United States.
• noun A serving of bourbon
• noun A Bourbon biscuit

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

• noun a European royal line that ruled in France (from 1589-1793) and Spain and Naples and Sicily
• noun a member of the European royal family that ruled France
• noun a reactionary politician in the United States (usually from the South)
• noun whiskey distilled from a mash of corn and malt and rye and aged in charred oak barrels