King James Dictionary 
Somewhat, n. some and what.
1. Something, though uncertain what. 2. More or less a certain quantity or degree, indeterminate. These salts have somewhat of a nitrous taste. 3. A part, greater or less. Somewhat of his good sense will suffer in this transfusion, and much of the beauty of his thoughts will be lost.
Somewhat, adv. In some degree or quantity. This is somewhat more or less than was expected he is somewhat aged he is somewhat disappointed somewhat disturbed.
Webster's Dictionary 
(1): ( adv.) In some degree or measure; a little.
(2): ( n.) A person or thing of importance; a somebody.
(3): ( n.) More or less; a certain quantity or degree; a part, more or less; something.