a set, group or series of eight related things; an octad.

that which has eight parts.

the eight chapters of Pāṇini's work on Samskřta grammar.

a poetical work consisting of eight stanzas.

any of the eight divisions of Řgvēda.

an octant - a) an eighth of a circle; 45° angle or arc; b) a sector of a circle; c) a division of space or of a solid figure or body divided into eight by three planes, usu. at right angles.

a southern constellation containing the celestial pole; Octans.

(dial.) a particular rites observed during the second half of the sixth month in Hindu calendar.