Because wouldn't that be the time you "break" your "fast".
Because wouldn't that be the time you "break" your "fast".
I don't disagree with the it started as first meal of the day regardless of time of day, but these days it is more likely to mean morning meal than it is first meal of the day.
You could refer to the concept of breakfast, the meal, and also the common food of breakfast, bacon and eggs, with the same word.
In PT-BR, our term translates to "morning coffee", and in PT-PT translates as "little lunch" (from french, petit déjeuner).
(Actually we also have a translation for breakfast - desjejum - but its not commonly used.)
edit: breakfast used to be called déjeuner, but it has been replaced by petit-déjeuner (little déjeuner literally) in some regions (including France). Other regions still call the first meal déjeuner.
Referring to your first meal, at 8pm without having slept away the day, as "breakfast" is outside most people's understanding of the word, though it is, strictly speaking, correct.
It's like the various meanings and uses of the word "decimate". The literal and historical meaning is to remove 1 out of 10 of a group, such as in combat against enemy forces or as punishment of some group or something. Today, it means removing a large percentage. "The army was decimated" today means that a large percentage (subjective) was killed or wounded.
Subjective meaning: Some might say 10% is large, others might mean 80%. And it depends on the initial size. 10% of 100 is only 10, that doesn't seem large. But 10% of 1,000,000 is 10,000, that's substantial though the percentage itself may appear small.
Descriptively, breakfast is clearly an early-morning meal eaten within an hour or two of the end of sleep. There is also, at least in America where I can speak for it, a set of associated "breakfast foods", making it reasonable to "have breakfast for dinner" and most people know what you mean. (i.e., even my 5-year-old knew precisely what that meant when I first said it, so one should carefully consider one's internet-pedant options before claiming that makes no sense :) ) Prescriptively one could make a case for "the meal that breaks your fast", though I daresay it would be a rather weak case. The term "fast" is almost dead in modern American English, though it may be making a comeback via things like Intermittent Fasting: https://www.nerdfitness.com/blog/2013/08/06/a-beginners-guid... (Which, for the purposes of this post, I'm merely pointing out a word usage. Though I do it myself now, I'm not defending or advocating it here.)
To flip the bias there, you could call the prescriptive point of view the "words have meaning ordained by God and it doesn't matter what anyone actually says" point of view, and call the descriptive point of view the "evidence-based" point of view.
When people say "breakfast", do they mean the moment of breaking one's fast? A prescriptivist would say "yes, obviously, it's right there in the word". A descriptivist would say "probably not, because everybody understands what it means to 'skip breakfast'."
You don't break a fast anyway, it's a metaphor. You can only break physical things. You interrupt it. Wait, that just means between + break in Latin. That doesn't even make sense - you're ending the fast, not pausing it... but wait, aren't you pausing it - because eventually you'll cease eating. Maybe all words are just convenient labels using metaphors to help us remember them. Anarchy!
edit: I thought about it a little longer, and wondered if "end" might be a better word, then realized that was a physical metaphor too. I've finally settled on a word that makes strict sense: "terminate." From now on, the appropriate word for the first meal you eat after not eating, no matter the time of day or even whether there was a period during that time when you were sleeping (hence every single meal and every single snack) will be "fastermination." And you shouldn't look at me weirdly when I say that; I'm just using English (or Latin or whatever) properly, and in the grand scheme of things, I'm more right than you are.