support posts

noun
UK /səˈpɔːt pəʊsts/
US /səˈpɔːrt poʊsts/

Support posts are strong poles that hold something up so it does not fall.

The wooden support posts keep the treehouse roof from falling down.


OTHER MEANINGS

2. Vertical members in a building's frame that carry weight from above.

Engineers checked the support posts before the bridge opened.

3. Posts used in a mine to keep the tunnel roof from caving in.

Miners set support posts along the new tunnel.

4. Figurative helpers or backers who keep a plan or group going.

The volunteers were the support posts of the whole festival.