mixer

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun One that mixes.
• noun A sociable person.
• noun An informal dance or party arranged to give members of a group an opportunity to get acquainted.
• noun A device that blends or mixes substances or ingredients, especially by mechanical agitation.
• noun A nonalcoholic beverage, such as soda water or ginger ale, used in mixed drinks.
• noun One who mixes the audio components of a recording.
• noun A device used to combine and adjust sounds from a variety of sources in order to create a final recorded audio product, such as the soundtrack of a movie.

from The Century Dictionary.

• noun One who or that which mixes or mingles.
• noun Specifically, a machine for mixing various substances. See malaxator.
• noun A receptacle for diluting a drop of blood with a definite quantity of artificial serum preliminary to counting the blood-corpuscles.
• noun A person of a social temperament; one who makes acquaintances readily and somewhat indiscriminately: as, he is a good mixer.

from the GNU version of the Collaborative International Dictionary of English.

• noun One who, or that which, mixes.
• noun Colloq. or Slang, U. S. A person who has social intercourse with others of many sorts; a person viewed as to his casual sociability; -- commonly used with some characterizing adjective.
• noun a social gathering, game, or dance organized to provide an opportunity for people to meet each other.
• noun a nonalcoholic beverage (such as fruit juice, club soda or ginger ale) added to an alcoholic beverage to produce a mixed drink.
• noun any device used for mixing.
• noun an electronic device for blending or manipulating sounds from different sources to produce a composite soundtrack, for an audio recording, video recording, or a movie.
• noun The technician who operates a mixer{6}.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Someone or something who mixes; the agent noun of mix.
• noun A machine outfitted with (typically blunt) blades with which it mixes or beats ingredients in a bowl below.
• noun A non-alcoholic drink (such as lemonade, Coca-Cola or fruit juice) that is added to spirits to make cocktails.
• noun mixing console

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a party of people assembled to promote sociability and communal activity
• noun a kitchen utensil that is used for mixing foods
• noun club soda or fruit juice used to mix with alcohol
• noun electronic equipment that mixes two or more input signals to give a single output signal