A poisonous gas. / (military) Any poisonous gas used as a chemical weapon.

plural of poisoned pawn

(chess) An unprotected pawn whose capture would be a losing move for the capturing player.

The European hemlock Conium maculatum, an extremely poisonous plant in the carrot family, Apiaceae / (uncountable) A lethally poisonous drink made from the plant.

plural of alcohol poisoning

plural of spit-poison

(obsolete, derogatory) A malicious person.

plural of rat poison

Poison used to kill rats and other rodents. / A West African shrub (Dichapetalum toxicarium, syn. Chailletia toxicaria), whose seeds are used to destroy rats.

plural of radiation poisoning