A white powder, a mixture of calcium hypochlorite and calcium chloride, prepared by the action of chlorine on calcium hydroxide, used as a strong bleaching agent and disinfectant. Formula: Ca(ClO)₂.

A powdered abrasive cleaner.

plural of powder keg

A barrel containing gunpowder. / (figuratively) An explosive or otherwise volatile situation.

Of a very pale blue colour.

A very pale blue colour.

(idiomatic, US, colloquial) To leave without saying goodbye; leave quietly, run away; scram; depart without taking leave or notifying anyone, often with a connotation of avoiding something unpleasant or shirking responsibility.

A dry leavening agent used in baking; a mixture of baking soda, an acid (often cream of tartar) and starch to keep it dry; when wetted, carbon dioxide is released.

(US) Very finely ground sugar to which cornstarch is added to prevent lumping, mostly used in icings and confections to produce a smooth texture.

An explosive, similar to gunpowder, consisting of nitrocellulose mixed with nitroglycerine or nitroguanidine; it burns with very little smoke.