I.
noun
ADJECTIVE
▪ dizzying ( AmE ), giddy ( BrE ), mad ( esp. BrE )
▪
The next few days were a mad ~ of parties.
▪ social
▪
It's easy to get caught up in the social ~.
▪ endless
▪
an endless ~ of parties
PREPOSITION
▪ in a ~
▪
His mind was in a ~ as he searched frantically for a solution.
II.
verb
Whirl is used with these nouns as the subject: ↑ mind