one who helps or encourages or incites another

Of, relating to, or being financial principal, or a principal in a financial transaction, Highest in rank, authority, character, importance, or degree; most considerable or important; chief; main, (Crystallog.) a plane passing through the optical axis of a crystal, noun_ A leader, chief, or head; one who takes the lead; one who acts independently, or who has controlling authority or influence; ; -- distinguished from a subordinate, abettor, auxiliary, or assistant, An important personal belonging; an heirloom, One of the turrets or pinnacles of waxwork and tapers with which the posts and center of a hearse were formerly crowned