root – la raíz

(Pronounced rrah-eeth)

To remember that root is pronounced rrah-eeth (raíz) in European Spanish, use the following mnemonic:

The roots of my plants have been ruined, that rabbit with it's big teeth (raíz) has chewed through them all. 

Raíz is feminine, so it's la raíz. Imagine a lady with roots instead of legs.