piers is a form of:

Pier



noun
1.
(បច្ចេកទេស) ផែ សរសរស្ពាន
ENGLISH MEANING
noun
1.
Any detached mass of masonry, whether insulated or supporting one side of an arch or lintel, as of a bridge; the piece of wall between two openings.
2.
Any additional or auxiliary mass of masonry used to stiffen a wall.
3.
A projecting wharf or landing place.