pachak

Century Dictionary and Cyclopedia

1. n. The costus, Heterotrichum Lappa. See costus-root and Saussurea.

Wiktionary

1. n. The fragrant roots of Saussurea costus, used as incense.

GNU Webster's 1913

1. n. (Bot.) The fragrant roots of the Saussurea Costus, exported from India to China, and used for burning as incense. It is supposed to be the costus of the ancients.