"Meat" was once a term for any food, just as "corn" was once a word for any grain. So a family who would sit down to meat might actually be sitting down to corn. Language usage shifts. Common usage changes. I myself think in meat/fish terms, but since I have general biology, I know that anything other than a mineral or a plant is an animal. Def from dictionary: A multicellular organism of the kingdom Animalia, differing from plants in certain typical characteristics such as capacity for locomotion, nonphotosynthetic metabolism, pronounced response to stimuli, restricted growth, and fixed bodily structure. (this includes, worms, insects, bugs, bivalves, and some planktons). So, an animal can move on its own, does not photosynthasise, reacts when you touch it, grows in certain ways only and not all over the place, and is only in one place (i.e. a cow is in a cow,) at one time. What that woman was showing was only a deficit in basic science education.