What does "pilaster" mean?

A rectangular column that projects partially from the wall to which it is attached; it gives the appearance of a support, but is only for decoration.

What is a synonym for "pilaster"?

Common synonyms include: antenna tower, arcade, atlas, baluster, balustrade, banister.

/pɪˈlæstɚ/ noun

noun ·Uncommon ·College level

Noun

1
A rectangular column that projects partially from the wall to which it is attached; it gives the appearance of a support, but is only for decoration.
2
a rectangular column that usually projects about a third of its width from the wall to which it is attached wordnet
3
A column or short wing wall attached to the foundation wall which provides lateral support, or to support a vertical load that does not fall on the foundation wall.

"There was a decorative pilaster to either side of the building's entrance."

From Middle French pilastre, from Italian pilastro. Equivalent to pillar + -aster.