What does "flesh and blood" mean?
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Human beings, especially with respect to their failings or weaknesses. For example, I can't do everything—I'm only flesh and blood. [c. 1600]
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one's own flesh and blood. One's blood relatives, kin, as in She can't cut her own flesh and blood out of her will. [c. 1300]
See flesh and blood in WNW Idioms
one's (own) flesh and blood
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