1. One of the upright, usually rounded or vase-shaped supports of a balustrade.
2. An upright support, such as a furniture leg, having a similar shape.
3. One of the supporting posts of a handrail.
[French balustre, from Italian balaustro, from balaustra, pomegranate flower (from a resemblance to the post), from Latin balaustium, from Greek balaustion.]
Belesa and Tina, forgotten on the stair, peeping between the balusters, saw Galbro fall behind the others, loitering until the heavy door closed after them.
[from “The Black Stranger”]