Origin: 1595–1605; < French, Middle French balustre < Italian balaustro pillar shaped like the calyx of the pomegranate flower, ultimately < Latin balaustium < Greek balaústion pomegranate flower
"support for a railing," c.1600, from Fr. balustre, from It. balaustro "pillar," from balausta "flower of the wild pomegranate," from Gk. balaustion (perhaps of Sem. origin, cf. Aram. balatz "flower of the wild pomegranate"). Staircase uprights had lyre-like double curves, like the calyx tube of the