The most widely used/standard translation of caro is dear/expensive, its used in later latin as an alternate form of carnis, carnis N but th Best word for meat would still be carnis
'Caro' in the nominative singular is common for meat.
Ovum non est caro - An egg is not meat
Ovum non est carum - An egg is not expensive
Carnis is a very common word for 'meat'. It is used in 4 different textbooks I have used. Please make it an option.