price fixing

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

• noun The setting of artificially high prices for goods or services by unlawful agreement of competing companies.
• noun Governmental setting of prices for goods or services.

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

• noun law : In antitrust law, collusion between competitors in order to raise prices, at the expense of competitive pricing.