What does “bici” mean in Spanish?

Bici is the short, friendly form of bicicleta, exactly like English “bike” for “bicycle.” It is what people actually say day to day: Voy en bici (I’m going by bike). Spanish loves these clipped words — once you spot the pattern, longer words feel less scary, because the everyday version is often shorter. Bici keeps the feminine gender: la bici.

Spanish shortens many words this way: la tele (television), la moto (motorbike, from motocicleta), la foto (photo). The clip pairs the full and short forms on purpose: “Esto es una bicicleta... Esto es una bici.” — showing the formal and casual words for the same thing.