pillar

(n) a fundamental principle or practice
- science eroded the pillars of superstition
(n) 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
tower, column,
(n) a prominent supporter
- he is a pillar of the community
mainstay,
(n) a vertical cylindrical structure standing alone and not supporting anything (such as a monument) column,
(n) (architecture) a tall vertical cylindrical structure standing upright and used to support a structure column,

tower column mainstay

pillow

pillar box pillared pillar of Islam pillar of strength pillar-shaped Pillars of Hercules