Available Definitions:
1) n. - A person having a common right or privilege with another; a partner.
2) n. - One who is in pursuit of the same object as another; one striving to reach or obtain something which another is attempting to obtain, and which one only can posses; a competitor; as, rivals in love; rivals for a crown.
3) a. - Having the same pretensions or claims; standing in competition for superiority; as, rival lovers; rival claims or pretensions.
4) v. t. - To stand in competition with; to strive to gain some object in opposition to; as, to rival one in love.
5) v. t. - To strive to equal or exel; to emulate.
6) v. i. - To be in rivalry.