noun, masculine/ˈpiso/plural: pisos
floor, ground (surface of the earth); floor, story, storey (level of a building); flat, apartment; deck (level on a ship or vehicle); decker (bus, bed)
“autobús de dos pisos” — double-decker bus
Synonyms: suelo, nivel, planta, apartamento, departamento, depa, apartamiento, vivienda
Deverbal from pisar.