Meaning of FOUR in English

FOUR

adj one more than three; twice two.

2. four ·noun a symbol representing four units, as 4 or iv.

3. four ·noun the sum of four units; four units or objects.

4. four ·noun four things of the same kind, ·esp. four horses; as, a chariot and four.

Webster English vocab.      Английский словарь Webster.