Genesis 25:25

And the first came out red, all over like an hairy garment; and they called his name Esau.

And the first came out red, all over like an hairy garment - х 'admowniy (H132), ruddy, red-haired; Septuagint, purrakees.] New-born infants are sometimes covered with a profusion of downy hair; and in the case of Isaac's first-born, the red hair was emblematic of physical vigour and wildness of character.

And they called his name Esau, х `Eesaaw (H6215)]. - i:e., hairy, rough.