pillar-n; 5 Senses

Sense Number 1: a cylindrical vertical object, decorative or functional

Commentary: PILLAR[+structure][+vertical][+cylindrical][+supportive/+freestanding]

The house was a Greek Revival and had six pillars on the front side.
The garden had freestanding ornamental pillars of marble.
This space is too tight to park the car because that pillar is in the way.
The miners left a pillar of rock to support the roof of the mine.

WordNet 3.0 Sense Numbers: 4, 5

Sense Number 2: a basic principle or fundamental tenet

Commentary: PILLAR[+idea][+principle][+fundamental]

He explained to us the five pillars of Islam.
Private property rights are one of the pillars of a free market society.
The structure of DNA has become a pillar of modern biochemistry.

WordNet 3.0 Sense Numbers: 1

Sense Number 3: a prominent or influential person

Commentary: PILLAR[+person][+influential][+prominent] [+role][+supporter][+significant]

It is an exclusive club whose members are among the pillars of society.
She was a pillar of strength for her family during their hardships.
For decades he was a pillar of the Democratic party machine in Chicago.

WordNet 3.0 Sense Numbers: 3

Sense Number 4: any tall, vertical shape

Commentary: PILLAR[+shape][+cylindrical][+tall]

They could see pillars of smoke rising from lower Manhattan.
We admired the pillars of fresh oranges and lemons on display by the fruit vendors.
John saw the towering pillars of storm clouds forming on the horizon.

WordNet 3.0 Sense Numbers: 2

Sense Number 5: fruitless movement from one place to another

Commentary: Idiom: from pillar to post

The refugees have been pushed from pillar to post in that area.
He spent ten years fumbling through odd jobs from pillar to post.

WordNet 0.0 Sense Numbers: idiom