the.com/redhead

means A person with naturally red or auburn hair, a trait produced by a specific genetic variant affecting pigment.

from Straightforward compound of 'red' + 'head,' first describing the hair color itself and later the person — the word is plain English carpentry, no hidden roots. The genetics behind it, though, are the real story: redheads carry variants of the MC1R gene, which normally helps produce dark eumelanin but instead yields more of the reddish-yellow pheomelanin. Red hair's rarity (and old superstitions linking it to fire, temper, and witchcraft) gave 'redhead' its centuries of cultural baggage long before anyone knew a gene was to blame.