la caja

la caja
kah'-hah
box; cash register, checkout; safe
Examples
1. Tenemos que llevar estas cajas de cereal a la caja para pagarlas.
We have to take these cereal boxes to the checkout to pay for them.
 
2. Siempre que llego al hotel pongo mi pasaporte en la caja de la habitaciĆ³n.
Whenever I get to the hotel I put my passport in the room's safe.
 
Notes
When using "caja" to mean a safe for valuables, it's also common to refer to it as a "caja fuerte."