/ˈsɪn.əd/
noun
An ecclesiastic council or meeting to consult on church matters.An administrative division of churches, either the entire denomination, as in the Lutheran Church–Missouri Synod, or a mid-level division (middle judicatory, district) as in the Evangelical Lutheran Church in AmericaAn assembly or council having civil authority; a legislative body.A conjunction of two or more of the heavenly bodies.