2. (noun)column, tower, pillar anything that approximates the shape of a column or tower "the test tube held a column of white powder"; "a tower of dust rose above the horizon"; "a thin pillar of smoke betrayed their campsite"
3. (noun)pillar, mainstay a prominent supporter "he is a pillar of the community"
1. (adj)pillar having a support in the form of a pillar, instead of legs; as, a pillardrill
2. (noun)pillar 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
3. (noun)pillar 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
Definition of pillar 
