1. The first meal of the day, usually eaten in the morning.
2. Informal Food traditionally consumed for breakfast, such as eggs or pancakes: We made breakfast for dinner.
v. break·fast·ed, break·fast·ing, break·fasts
To eat breakfast: We breakfasted on the terrace.
To provide breakfast for.
[Middle English brekfast : breken, to break; see BREAK + faste, a fast (from Old Norse fasta, to fast; see past- in the Appendix of Indo-European roots).]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 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.