Septum

Webster's Dictionary

(1): ( n.) One of the transverse partitions dividing the body cavity of an annelid.

(2): ( n.) One of the radial calcareous plates of a coral.

(3): ( n.) A wall separating two cavities; a partition; as, the nasal septum.

(4): ( n.) One of the transverse partitions dividing the shell of a mollusk, or of a rhizopod, into several chambers. See Illust. under Nautilus.

(5): ( n.) A partition that separates the cells of a fruit.

Cyclopedia of Biblical, Theological and Ecclesiastical Literature

a term used by certain 17th-century Anglican writers for the fixed or movable rail placed on each side of the entrance of the sanctuary to support the communicants when they knelt to receive the Lord's body and blood.