mix·er 
(mĭksər)
(mĭksər)n.
1. One that mixes: a mixer of concrete; a mixer of drinks.
2. A sociable person: She's outgoing and a good mixer.
3. An informal dance or party arranged to give members of a group an opportunity to get acquainted.
4. A device that blends or mixes substances or ingredients, especially by mechanical agitation.
5. A nonalcoholic beverage, such as soda water or ginger ale, used in mixed drinks.
6. Electronics
a. One who mixes the audio components of a recording.
b. 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.