noun.
A spear with a triangular, double-edged blade.
noun.
A soldier armed with such a weapon.
noun.
An adherent to a party or faction.
noun.
A fervent, sometimes militant, supporter or proponent of a party, cause, faction, person, or idea.
noun.
A guerilla fighter; a member of detached light troops acting behind enemy lines.
noun.
The commander of a body of detached light troops engaged in making forays and harassing an enemy.
adjective.
Serving as commander or member of a body of detached light troops: as, a partisan officer or corps.
adjective.
Adherent to a party or faction; especially, having the character of blind, passionate, or unreasonable adherence to a party; as, blinded by partisan zeal.
adjective.
Devoted to or biased in support of a party, group, or cause: partisan politics.