A·qua n. Water; -- a word much used in pharmacy and the old chemistry, in various signification, determined by the word or words annexed.
Aqua ammoniæ, the aqueous solution of ammonia; liquid ammonia; often called aqua ammonia.
Aqua marine or Aqua marina Same as Aquamarine.
Aqua Tofana a fluid containing arsenic, and used for secret poisoning, made by an Italian woman named Tofana, in the middle of the 17th century, who is said to have poisoned more than 600 persons. --Francis.