This is the 981st most frequent Portuguese word.
branco
"Branco" means "white" in English.
Here, 'branco' is used as an adjective to describe the color of the car (white).
Meu carro é branco.
My car is white.
In this context, 'branco' modifies 'quadro,' referring to a 'whiteboard.'
Ele escreveu algo no quadro branco.
He wrote something on the whiteboard.
Here, 'branco' is used colloquially to represent a momentary loss of memory ('blanked out').