Partisan

Part of speech: noun (n.)

1. An adherent to a party or faction; esp., one who is strongly and passionately devoted to a party or an interest. "The violence of a partisan." Macaulay. Both sides had their partisans in the colony. Jefferson.

2. The commander of a body of detached light troops engaged in making forays and harassing an enemy.

3. Any member of such a corps.

Part of speech: noun (n.)

A kind of halberd or pike; also, a truncheon; a staff. And make him with our pikes and partisans a grave. Shak.

Part of speech: adjective (a.)

1. Adherent to a party or faction; especially, having the character of blind, passionate, or unreasonable adherence to a party; as, blinded by partisan zeal.

2. Serving as a partisan in a detached command; as, a partisan officer or corps. Partisan ranger (Mil.), a member of a partisan corps.