To conjecture wrongly.
A wrong conjecture or guess.
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.