Is a Brazil nut fruit?

No, a Brazil nut is not a fruit. It is the seed of a large, woody fruit called a capsule.

Here's the breakdown:

* The fruit: The capsule that contains the Brazil nuts is a large, woody structure. It takes about 14 months to mature and then bursts open, releasing the seeds.

* The seed: The Brazil nut itself is the seed within this capsule. It's what we eat.

So, while we might refer to the Brazil nut as a "fruit," it's technically a seed.