n. The general and popular term for a firm, upright, insulated support for a superstructure; a pier, column, or post; also, a column or shaft not supporting a superstructure, as one erected for a monument or an ornament. A vertical support member, usually the main support. Is not attached at its sides. Figuratively, that which resembles such a pillar in appearance, character, or office; a supporter or mainstay; as, the Pillars of Hercules; a pillar of the state.
- (R. C. Ch.) A portable ornamental column, formerly carried before a cardinal, as emblematic of his support to the church.
- (Man.) The center of the volta, ring, or manege ground, around which a horse turns. From pillar to post, hither and thither; to and fro; from one place or predicament to another; backward and forward. - Pillar saint. See Stylite.
- Pillars of the fauces. See Fauces.
- adj. (Mach.) Having a support in the form of a pillar, instead of legs; as, a pillar drill.