Floor – el suelo
(Pronounced sweh-loh)
To remember that floor is pronounced sweh-loh (suelo) in Spanish, use the following mnemonic:
The floor was covered in his suede loafers (suelo).

Suelo is masculine, so it's el suelo. Imagine an elephant leaving a mess on the kitchen floor.

Examples of suelo (floor) in a sentence
El suelo de la cocina está muy sucio.
(The kitchen floor is very dirty.)
Me caí al suelo cuando resbalé.
(I fell to the floor when I slipped.)
El niño está jugando en el suelo.
(The child is playing on the floor.)