during the time that sth is happening
We must have been burgled while we were asleep.
Her parents died while she was still at school.
While I was waiting at the bus stop, three buses went by in the opposite direction.
at the same time as sth else is happening
You can go swimming while I'm having lunch.
shoes mended while you wait
used to contrast two things
While Tom's very good at science, his brother is absolutely hopeless.
used at the beginning of a sentence
although; despite the fact that…
While I am willing to help, I do not have much time available.
I waited while six o'clock.
used to suggest that sb could do sth while they are doing sth else
‘I'm just going to buy some postcards.’ ‘Can you get me some stamps while you're at it?’
a period of time
They chatted for a while .
I'll be back in a little while (= a short time) .
I haven't seen him for quite a while (= a fairly long time) .
They walked back together, talking all the while (= all the time) .
interesting or useful for sb to do
It will be worth your while to come to the meeting.
He'll do the job if you make it worth his while (= pay him well) .
to spend time in a pleasant lazy way
We whiled away the time reading and playing cards.