(1):

(n.) The person who is substituted or deputed to act or vote for another.

(2):

(n.) The agency for another who acts through the agent; authority to act for another, esp. to vote in a legislative or corporate capacity.

(3):

(n.) The written appointment of a proctor in suits in the ecclesiastical courts.

(4):

(n.) See Procuration.

(5):

(v. i.) To act or vote by proxy; to do anything by the agency of another.

(6):

(n.) A writing by which one person authorizes another to vote in his stead, as in a corporation meeting.