Definition of: it

(it) pron.
The neuter pronoun, nominative (pl. they) and objective (pl. them), of the third person singular, used:
1. As a substitute for things or for infants and animals when the sex is unspecified.
2. As the subject of an impersonal verb: It rained.
3. As the subject or object of a clause regarding a general condition or state of affairs: How was it? It was warm.
4. As the subject or predicate nominative of a verb whose logical subject is anticipated: Who was it? It was John.
5. As the indefinite subject of a verb introducing a clause or phrase: It seems that he knew.
6. Colloq. As the indefinite object after certain verbs in idiomatic expressions: to lord it over; to face it.
—noun In certain children's games, the player required to perform some specified act. [OE hit]