Jagged ['dʒægıd]

=>Adjective

Rough, with a lot of sharp points:

Gagged rocks

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Updrafts [ʌpdræft]

=>Noun

The movement upward of air or other gas

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Dozen ['dʌzən]

=>Noun

Twelve:

A dozen red roses

Two dozen boxes

Half a dozen eggs

=>Dozen of

A lot of:

They’ve invited dozens of people to the party.