a. A game played with a bat and ball by two opposing teams of nine players, each team playing alternately in the field and at bat, the players at bat having to run a course of four bases laid out in a diamond pattern in order to score.
b. The ball that is used in this game.
2. A game of darts in which the players attempt to score points by throwing the darts at a target laid out in the form of a baseball diamond.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.