Sandarach \San"da*rach\, Sandarac \San"da*rac\,, n. [L. sandaraca, Gr. ?.]

1. (Min.) Realgar; red sulphide of arsenic. [Archaic]

2. (Bot. Chem.) A white or yellow resin obtained from a Barbary tree (Callitris quadrivalvis or Thuya articulata), and pulverized for pounce; -- probably so called from a resemblance to the mineral.

Source: Webster's Revised Unabridged Dictionary (1913)