Definitions
1.nounA competitor (person, team, company, etc.) with the same goal as another, or striving to attain the same thing. Defeating a rival may be a primary or necessary goal of a competitor."Chris is my biggest rival in the 400-metre race."
2.nounSomeone or something with similar claims of quality or distinction as another."As a social historian, he has no rival."
3.nounOne having a common right or privilege with another; a partner.
4.verbTo oppose or compete with."to rival somebody in love"
5.verbTo be equal to, or match, or to surpass another.
6.verbTo strive to equal or excel; to emulate.