Merriam-Webster's Advanced Learner's Dictionary:
1blond or blonde /ˈblɑːnd/ adj blond·er; -est
1 : of a yellow or very light brown color
• long blond hair
• blonde curls/locks/braids
• She has blonde highlights in her hair.
• His hair was dyed/bleached blond. also; : having blond hair
• a blond actor
• She was blonde as a child.
✦When used to describe a boy or man, the word is spelled blond. When used for a girl or woman, the word is often spelled blonde.
✦A person with dirty blond hair has very dark blond hair that is almost light brown in color.
- see also platinum blonde, strawberry blonde
2 : of a very light color
• a table made of blond wood