Thayer's Greek Lexicon

 1. flesh (the soft substance of the living body, which covers
the bones and is permeated with blood) of both man and beasts
2. the body
  1) the body of a man
  2) used of natural or physical origin, generation or
relationship
2b1. born of natural generation
  3) the sensuous nature of man, "the animal nature"
2c1. without any suggestion of depravity
2c2. the animal nature with cravings which incite to sin
2c3. the physical nature of man as subject to suffering
3. a living creature (because possessed of a body of flesh)
whether man or beast
4. the flesh, denotes mere human nature, the earthly nature of man apart
from divine influence, and therefore prone to sin and opposed to God