knife – el cuchillo
(Pronounced koo-chee-yoh)
To remember that knife is pronounced koo-chee-yoh (cuchillo) in Spanish, use the following mnemonic:
He bought a knife with a coupon. It was cheap, and Yoda (cuchillo) didn't like it.
Cuchillo is masculine, so it's cuchillo. Imagine an elephant brandishing a knife.