Webster's Revised Unabridged Dictionary · 1913

Babul

Babul , noun

[See Bablah.]

(Botany) Any one of several species of Acacia, esp. Acacia Arabica, which yields a gum used as a substitute for true gum arabic.
In place of Putney's golden gorse The sickly babul blooms. — Kipling

Also: Babool