You're getting downvoted, but I don't think everyone realizes this can be a genuine point of confusion. "Meat", like many words, has multiple senses. One of th

You're getting downvoted, but I don't think everyone realizes this can be a genuine point of confusion. "Meat", like many words, has multiple senses. One of them is the flesh of any animal. Another is the flesh of a mammal, which would exclude fish (and probably poultry). The second definition isn't used as often, but you will find it many dictionaries, and some people do use the word in that way and treat meat / poultry / fish as disjoint sets. For example, the classic book "Joy of Cooking" has chapters titled "Shellfish", "Fish", "Poultry and Wildfowl", "Meat" (pork, beef, lamb), and "Game". (Actually, I guess "Joy of Cooking" is being even more specific and taking "meat" to mean domesticated mammal flesh, because there are some mammals in the "Game" chapter.)