a bottle with a nozzle for spraying a mist of water, as onto houseplants
See mister in American Heritage Dictionary 4
noun
Used as a courtesy title before the surname, full name, or professional title of a man, usually written in its abbreviated form: Mr. Jones; Mr. Secretary.
Used as the official term of address for certain U.S. military personnel, such as warrant officers.
misterInformal Used as a form of address for a man: Watch your step, mister.
Informal Used as a term of reference by a woman of her husband.