Flesh

Boyd’s Bible Dictionary:

Everything living
(Gen. 6:13-1913And God said unto Noah, The end of all flesh is come before me; for the earth is filled with violence through them; and, behold, I will destroy them with the earth. 14Make thee an ark of gopher wood; rooms shalt thou make in the ark, and shalt pitch it within and without with pitch. 15And this is the fashion which thou shalt make it of: The length of the ark shall be three hundred cubits, the breadth of it fifty cubits, and the height of it thirty cubits. 16A window shalt thou make to the ark, and in a cubit shalt thou finish it above; and the door of the ark shalt thou set in the side thereof; with lower, second, and third stories shalt thou make it. 17And, behold, I, even I, do bring a flood of waters upon the earth, to destroy all flesh, wherein is the breath of life, from under heaven; and every thing that is in the earth shall die. 18But with thee will I establish my covenant; and thou shalt come into the ark, thou, and thy sons, and thy wife, and thy sons' wives with thee. 19And of every living thing of all flesh, two of every sort shalt thou bring into the ark, to keep them alive with thee; they shall be male and female. (Genesis 6:13‑19)); mankind (Gen. 6:1212And God looked upon the earth, and, behold, it was corrupt; for all flesh had corrupted his way upon the earth. (Genesis 6:12)); the body (Col. 2:55For though I be absent in the flesh, yet am I with you in the spirit, joying and beholding your order, and the stedfastness of your faith in Christ. (Colossians 2:5); 1 Peter 4:66For for this cause was the gospel preached also to them that are dead, that they might be judged according to men in the flesh, but live according to God in the spirit. (1 Peter 4:6)); seat of appetites (Rom. 8:1,5,91There is therefore now no condemnation to them which are in Christ Jesus, who walk not after the flesh, but after the Spirit. (Romans 8:1)
5For they that are after the flesh do mind the things of the flesh; but they that are after the Spirit the things of the Spirit. (Romans 8:5)
9But ye are not in the flesh, but in the Spirit, if so be that the Spirit of God dwell in you. Now if any man have not the Spirit of Christ, he is none of his. (Romans 8:9)
; Gal. 5:17-1917For the flesh lusteth against the Spirit, and the Spirit against the flesh: and these are contrary the one to the other: so that ye cannot do the things that ye would. 18But if ye be led of the Spirit, ye are not under the law. 19Now the works of the flesh are manifest, which are these; Adultery, fornication, uncleanness, lasciviousness, (Galatians 5:17‑19); Eph. 2:33Among whom also we all had our conversation in times past in the lusts of our flesh, fulfilling the desires of the flesh and of the mind; and were by nature the children of wrath, even as others. (Ephesians 2:3)). Used much figuratively.

Concise Bible Dictionary:

This term is used in various senses in scripture. The principal are ...
2. The material part of man and of animals: "all flesh is not the same flesh: but there is one kind of flesh of men, another flesh of beasts" (1 Cor. 15:3939All flesh is not the same flesh: but there is one kind of flesh of men, another flesh of beasts, another of fishes, and another of birds. (1 Corinthians 15:39)).
7. Though no longer the state of the Christian, yet the flesh is in him, and is antagonistic to the Spirit, "the flesh lusteth against the Spirit, and the Spirit against the flesh: and these are contrary the one to the other: so that ye should not do the things that ye would" (Gal. 5:1717For the flesh lusteth against the Spirit, and the Spirit against the flesh: and these are contrary the one to the other: so that ye cannot do the things that ye would. (Galatians 5:17)). Thus the Spirit resists in the Christian the accomplishment of the lusts of the flesh.

From Anstey’s Doctrinal Definitions:

When used with the article “the” before the word, it refers to the fallen sin-nature in man. But when it is used without the article, it usually is denoting what is human, rather than what is sinful. (Unfortunately, the KJV does not always follow this rule, as do the more critical translations produced by J. N. Darby, W. Kelly, etc.)