(1):

(n.) One who solicits.

(2):

(n.) An attorney or advocate; one who represents another in court; - formerly, in English practice, the professional designation of a person admitted to practice in a court of chancery or equity. See the Note under Attorney.

(3):

(n.) The law officer of a city, town, department, or government; as, the city solicitor; the solicitor of the treasury.