Idioms
zero hour
the exact time when an attack or other military action will start
The air force planes waited until zero hour in order to begin their bombing mission.
zero in on
zero-sum game
zonk out
zoom in on (someone or something)
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in honor of (someone or something)
horse trade
as soon as
sit tight
fair play
start over with a clean slate
hear from (someone)
when hell freezes over
shore (something) up or shore up (something)
by the month
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Fact
The highest point of the earth, with an elevation of 29,141 feet, is the top of Mt. Everest in Tibet.
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