1. To determine or describe the end or limit; as, to define the extent of a kingdom or country.

2. To determine with precision; to ascertain; as, to define the limits of a kingdom.

3. To mark the limit; to circumscribe; to bound.

4. To determine or ascertain the extent of the meaning of a word; to ascertain the signification of a term; to explain what a word is understood to express; as, to define the words, virtue, courage, belief, or charity.

5. To describe; to ascertain or explain the distinctive properties or circumstances of a thing; as, to define a line or an angle.

, v.i. To determine; to decide.