noun, masculine/ˈfoko/plural: focos
spotlight; light bulb; shame; Man with hair a little longer than a buzz cut.; crystal meth
“Pero el foco de mi lámpara no va a servir para ponerlo ahí.[…]Ay, pues porque el foco de mi lámpara se atornilla hacia abajo y el foco de ahí se atornilla hacia arriba.” — But the ligh bulb of my [bedside] lamp won't work there [on the ceiling]. […] Well, because the ligh bulb of my lamp is screwed downwards and the ligh bulb there is screwed upwards.
Synonyms: reflector, enfoque, bombilla, bombillo, ampolleta, faro, linterna, lámpara
Borrowed from Latin focus. Compare the inherited doublet fuego.