Collocations for hour - noun

full, solid
I slept for eight solid hours.

contact, credit (AmE)
the number of contact hours per week

take
It takes two hours to get to Vancouver.

spend
waste
last
The performance lasted three hours.

gain, lose
You lose five hours when you fly from New York to London.

go by, pass
An hour passed and she still hadn't arrived.

by the hour
They're paid by the hour.

for an hour
She worked for three hours.

in an hour, within an hour
I should be back within a couple of hours.

over an hour, under an hour
He's been gone for over an hour.

per hour
Top speed is 120 miles per hour.

within the hour
We hope to be there within the hour (= in less than an hour).

hour of
There are still two hours of daylight left.

half an hour
hour after hour
in an hour's time (esp. BrE)
with every passing hour
She grew more worried with every passing hour.

chime, strike
The clock struck the hour.

on the hour
Buses leave every hour on the hour.

past the hour
ten minutes past the hour

to the hour (esp. BrE)
ten minutes to the hour

lunch
peak, rush
rush-hour traffic

happy (= time in the early evening when a bar sells alcoholic drinks at lower prices than usual)

spend
I spent my lunch hour shopping.

hour of
an hour of rest

office, opening, visiting, working
the hospital's visiting hours

flexible
long
regular
licensing (BrE)
Britain's licensing hours (= when pubs are allowed to open)

work
She works very long hours.

keep
He keeps regular hours.

after hour
He spends a lot of time in his office after hours.

out of hour (esp. BrE)
Doctors often have to work out of hours.

darkest, finest
The war years were often thought of as the country's finest hour.

antisocial (esp. BrE), unearthly (esp. BrE), ungodly, unsocial (esp. BrE)
I apologize for calling you at this ungodly hour.
Bakers have to work unsocial hours.

early, early-morning (esp. AmE), small, wee small hours (= the hours after midnight)
The party continued well into the early hours.

late
waking
She spends every waking hour at the gym.

come
The hour had come for us to leave.

between the hours of
The office is closed between the hours of twelve and two.

hour of
the hours of darkness

your hour of need
She helped me in my hour of need.