A kind of silk lace originally of the color of raw silk, nowsometimes dyed; -- called also blond lace.
A hair color sometimes associated with unintelligence when in fact intelligence is not affected noticeably by hair color.
It's a hair colour (gold, usually), NOT a personality trait.
The dumb blonde cliché started with the kinds of characters Marylin Monroe played in many of her movies. She usually played characters who were pretty ditsy, though sometimes she came through with some profoundly wise insight. So when people blame their ditsiness or naivety on being blonde, they are just pandering to a popular culture stereotype.
In other words, being blonde has nothing to do with being stupid. Being stupid has everything to do with being stupid.
A Blonde is NOT a Bleached Brunette with a chemical spotlight on her inferior head.