un·der·stand·ing
[uhn-der-stan-ding]

noun
1. mental process of a person who comprehends; comprehension; personal interpretation: My understanding of the word does not agree with yours.

2. intellectual faculties; intelligence; mind: a quick understanding.

3. superior power of discernment; enlightened intelligence: With her keen understanding she should have become a leader.

4. knowledge of or familiarity with a particular thing; skill in dealing with or handling something: an understanding of accounting practice.

5. a state of cooperative or mutually tolerant relations between people: To him, understanding and goodwill were the supreme virtues.

6. a mutual agreement, especially of a private, unannounced, or tacit kind: They had an understanding about who would do the dishes.

7. an agreement regulating joint activity or settling differences, often informal or preliminary in character: After hours of negotiation, no understanding on a new contract was reached.

8. Philosophy .
     a. the power of abstract thought; logical power.
     b. Kantianism . the mental faculty resolving the sensory manifold into the transcendental unity of apperception.