The correct answer is (C) 1. Trade by exchange; direct exchange of one good or service for another without the use of money. 2. The good or service for barter.

Examples of use:

• Before agreeing to the barter, each quietly decided if what he or she would receive would be a fair return for what would be given.
  
  
• Because of their barter, she obtained free English lessons and he obtained free French translation.