pillar
When referring to a physical support, "pillar" is usually interchangeable with "column," though "pillar" often suggests something more massive or standalone. In the metaphorical sense (a person who supports a community), it is almost always used in the phrase "a pillar of [something]," such as "a pillar of strength" or "a pillar of society." When describing smoke or fire, "pillar" emphasizes the vertical shape and height of the column.
💬Casual Conversation
Did you finish the report? David is literally the pillar of this project and he's losing it.
Chill. I'm still vibing with the data, I'll get to it eventually.
Meanings
A tall vertical structure of stone, wood, or metal, used as a support for a building or as an ornament.
"The grand entrance was framed by two massive marble pillars."
A person who is a chief supporter of a particular community, organization, or belief system.
"As a dedicated doctor and philanthropist, she is considered a pillar of the local community."