Brain – el cerebro
(Pronounced theh-reh-bro)
To remember that brain is pronounced theh-reh-bro (cerebro) in European Spanish, use the following mnemonic:
His brain was hurting after the difficult exam he'd sat that day, then his friend said, 'Look at the ray, bro!' (celebro), and he felt a lot better.

Cerebro is masculine, so it's el cerebro. Imagine a brain that looks like an elephant.

Examples of cerebro (brain) in a sentence
El cerebro humano es el órgano más complejo del cuerpo.
(The human brain is the most complex organ in the body.)
Necesito usar mi cerebro para resolver este problema.
(I need to use my brain to solve this problem.)
Los científicos estudian el cerebro para entender mejor la memoria.
(Scientists study the brain to better understand memory.)