AFTER THE USUAL TIME›after the usual time or the time that was arranged: I was late for work this morning.We got there too late and all the tickets had been sold.You're late - you were supposed to be here an hour ago!We had a late lunch.
NEAR END OF PERIOD›near the end of a period of time: It was built in the late nineteenth century.It was late at night.Marsha is in her late twenties.
it's late›something that you say when it is near the end of a day: It's late - I really should be going.It's getting late and I'm a bit tired.