[pil.lar] n [ME piler, fr. OF, fr. ML pilare, fr. L pila] (13c) 1 a: a firm upright support for a superstructure: post b: a usu. ornamental column or shaft; esp: one standing alone for a monument
2: a chief supporter: prop
3: a solid mass of coal, rock, or ore left standing to support a mine roof
4: a body part that resembles a column -- pil.lar.less adj -- from pillar to post : from one place or one predicament to another
[2]pillar vt (1607): to provide or strengthen with or as if with pillars