FWIW I normally eat dinner around 6, go to bed 5 hours later at 11pm, and eat my next meal 8.5 hours later at 7:30am; at which point “break-fast” is certainly the right word, since I haven’t eaten for 13 hours. Contrast to breakfast, which only has to last me 5 hours (until lunch at 12:30pm), and lunch which again only has to last me 5.5 hours (until 6pm).
FWIW I normally eat dinner around 6, go to bed 5 hours later at 11pm, and eat my next meal 8.5 hours later at 7:30am; at which point “break-fast” is certainly the right word, since I haven’t eaten for 13 hours. Contrast to breakfast, which only has to last me 5 hours (until lunch at 12:30pm), and lunch which again only has to last me 5.5 hours (until 6pm).