Noah Webster's New International Dictionary of the English Language

1. (n.) The power of receiving or containing; extent of room or space; passive power; -- used in reference to physical things.

2. (n.) The power of receiving and holding ideas, knowledge, etc.; the comprehensiveness of the mind; the receptive faculty; capability of understanding or feeling.

3. (n.) Ability; power pertaining to, or resulting from, the possession of strength, wealth, or talent; possibility of being or of doing.

4. (n.) Outward condition or circumstances; occupation; profession; character; position; as, to work in the capacity of a mason or a carpenter.

5. (n.) Legal or normal qualification, as of age, residence, character, etc., necessary for certain purposes, as for holding office, for marrying, for making contracts, will, etc.; legal power or right; competency.