Definition Of it
(in children's games) the player who has to catch the others.
Elly tagged Karina and ran off, ‘you're it .’
denoting a person or thing that is exceptionally fashionable, popular, or successful at a particular time.
they were Hollywood's It couple
exactly what is needed or desired.
they thought they were it
he's still got “it.”
the situation or circumstances; things in general.
no one can stay here—it's too dangerous now