{adv.} 1. For days without stopping; continually. Syn.: AROUND THE CLOCK. * /Some filling stations on great highways are open day and night 365 days a year./ * /The three men took turns driving the truck, and they drove night and day for three days./ 2. Every day and every evening. * /The girl knitted day and night to finish the sweater before her mother's birthday./
See: DAY AND NIGHT.