I think you have your information muddled CL.....certainly your definitions.
If you need it spelled out for you...
It was sin to eat meat before the flood. Genesis 1:
29 And God said, “See, I have given you
every herb that yields seed which is on the face of all the earth, and every tree whose fruit yields seed; to you it shall be for food. 30
Also, to every beast of the earth, to every bird of the air, and to everything that creeps on the earth, in which there is life,
I have given every green herb for food”; and it was so.
It was NOT a sin to eat meat after the flood. Genesis 9:
“Be fruitful and multiply, and fill the earth. 2 And the fear of you and the dread of you shall be on every beast of the earth, on every bird of the air, on all that move
on the earth, and on all the fish of the sea. They are given into your hand. 3
Every moving thing that lives shall be food for you. I have given you all things, even as the green herbs. 4 But you shall not eat flesh with its life, that is, its blood.
It became a sin again during the period of the law on certain meats. Leviticus 11 (definitions). Leviticus 20:
24 But I have said to you, “You shall inherit their land, and I will give it to you to possess, a land flowing with milk and honey.” I
am the Lord your God, who has separated you from the peoples. 25 You shall therefore
distinguish between clean animals and unclean, between unclean birds and clean, and you shall not make yourselves abominable by beast or by bird, or by any kind of living thing that creeps on the ground, which I have separated from you as unclean. 26 And you shall be holy to Me, for I the Lord am holy, and have separated you from the peoples, that you should be Mine.
It then became NOT a sin after the period of the law was over. Acts 10:
10 Then he became
very hungry and wanted to eat; but while they made ready, he fell into a trance 11 and saw heaven opened and an object like a great sheet bound at the four corners, descending to him and let down to the earth. 12 In it were all kinds of four-footed animals of the earth, wild beasts, creeping things, and birds of the air. 13 And a voice came to him, “Rise, Peter; kill and eat.”
14 But Peter said, “Not so, Lord! For I have never eaten anything common or unclean.”
15 And a voice
spoke to him again the second time, “
What God has cleansed you must not call common.” 16 This was done three times. And the object was taken up into heaven again.
Also, 1 Timothy 4:
commanding to abstain from foods which God created to be received with thanksgiving by those who believe and know the truth. 4 For
every creature of God is good, and nothing is to be refused if it is received with thanksgiving; 5 for it is sanctified by the word of God and prayer.