adverb/de ˌklaɾo en ˈklaɾo/
sleeplessly; without sleeping a wink
“la excelente mujer no durmió en la noche del 24, porque toda ella se la pasó de claro en claro, ora batiendo huevos[…] ora desplumando aves[…]” — the most excellent lady did not sleep on the night of the 24th, because she spent it sleeplessly, be it beating eggs […] , plucking birds […]