Here's what Mr. Webster says:
Definition of MEAT
1
a : food; especially : solid food as distinguished from drink b : the edible part of something as distinguished from its covering (as a husk or shell)
2
: animal tissue considered especially as food: a : flesh 2b; also : flesh of a mammal as opposed to fowl or fish b : flesh 1a; specifically : flesh of domesticated animals
3
archaic : 1meal 1; especially : dinner
4
a : the core of something : heart b : pith 2b <a novel with meat>
5
: favorite pursuit or interest
Definition of MEAT
1
a : food; especially : solid food as distinguished from drink b : the edible part of something as distinguished from its covering (as a husk or shell)
2
: animal tissue considered especially as food: a : flesh 2b; also : flesh of a mammal as opposed to fowl or fish b : flesh 1a; specifically : flesh of domesticated animals
3
archaic : 1meal 1; especially : dinner
4
a : the core of something : heart b : pith 2b <a novel with meat>
5
: favorite pursuit or interest