Pachak \Pa*chak"\, 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. [Written also {putchuck}.] [1913 Webster]
Putchuck \Put*chuck"\, n. (Bot.) Same as {Pachak}. [1913 Webster]