Pillar (noun)

1. A vertical, slender, freestanding architectural element.
2. A supporting, integral, or upstanding member or part.
3. A prominent member of a community or group.

Origin:

From middle english piler, from old french pilier, from latin pīla, from proto-indo-european *pelh₁- (“stake, pile”).

Examples:

1. The temple had tall pillars supporting the roof.
2. The bridge's pillars had to withstand the force of the water.
3. The pillar of the community was widely respected.