tooth – el diente

(Pronounced dyehn-tay)

Note: The plural, teeth, is los dientes in Spanish. 

To remember that tooth is pronounced dyehn-tay (diente) in Spanish, use the following mnemonic:

That tooth, I've decided it's enormous, and I have to take (diente) it out. 

Diente is masculine, so it's el diente. Imagine an elephant losing a tooth.