A towhead is one with fair hair, typically white-blond. Blondness in youngsters is rampant while scarce in adults, as hair tends to darken with age. Know that this term is not restricted to a child. This relates to "tow," coarse broken flax or hemp fiber prepared for spinning. The word compares the colors of flax and fair hair. "Flaxen" and "towheaded" are totally synonymous.