Apartado – P.O. Box
Caja or buzón de sugerencias – suggestion box
Caja – box or coffin. Ataúd also means coffin.
Caja chica – petty cash box
Caja de cambios – gear box
Caja fuerte – safe
Caja de ahorros – saving bank
Caja de fusibles – fuse box
Caja de música – music box
Caja de Pandora – Pandora’s Box
Caja de registro – manhole
Caja de resonancia – soundbox, sounding board (figurative)
Caja del cuerpo – torso. La caja torásica is also used
Caja negra – a plane’s black box
Cajón – chest, drawer or large box
Empacador/a – box person in a supermarket
Encajonar – to pack something in a box or to confine someone
Hacer caja – to add up a day’s sales. The verb contabilizar is also used.
Palco – a box in a theater or stadium
Pugilista or boxeador – boxer or prizer fighter
Taquilla – box office

Spanish Expressions

Cabeza de cajón – a dumb person Cabeza hueca (hollow head) is also used
Echar a alguien con cajas destempladas – to send someone packing
Estar como cajón de sastre – to be in bad shape
Meter alguien en caja – to put someone in their place