Furthermore, where does the phrase three square meals a day come from?
The most common claims that sailors aboard ship had their meals served to them on square wooden trays or plates, that they either carried back to their bunks, where the plates could be stored easily, or that were stored elsewhere. Today, we use the phrase 'square meal' to refer to a full, balanced meal.
Secondly, where did the expression square meals come from? The term square meal is a nautical term from the days of old sailing ships. Any significant meals (usually the last one of the day) would be eaten off a square-shaped wooden plate, which also served as the tray. A decent meal on board became known as a square meal.
Keeping this in consideration, what does 3 squares a day mean?
The three nutritionally complete meals (in one day), that is, breakfast, lunch, and dinner.
What does the idiom a square meal mean?
If you have a square meal, you have a large, healthy meal. The troops are very tired. They haven't had a square meal for four or five days. See full dictionary entry for meal.