(1):

(v.) Anything associated with another as a helper; an auxiliary.

(2):

(v.) Anything akin to another by structure, etc.

(3):

(v.) A relative; a kinsman.

(4):

(v. t.) To unite, or form a connection between, as between families by marriage, or between princes and states by treaty, league, or confederacy; - often followed by to or with.

(5):

(v.) One united to another by treaty or league; - usually applied to sovereigns or states; a confederate.

(6):

(v. t.) To connect or form a relation between by similitude, resemblance, friendship, or love.

(7):

(n.) See Alley, a marble or taw.