'Mixer' definitions:

Definition of 'mixer'

noun

A party of people assembled to promote sociability and communal activity [syn: sociable, social, mixer]

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

noun

A kitchen utensil that is used for mixing foods

From: GCIDE

Mixer \Mix"er\, n.
1. One who, or that which, mixes. [1913 Webster]
2. 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; as, a good mixer; a bad mixer. [Colloq. or Slang, U. S.] [Webster 1913 Suppl.]
3. a social gathering, game, or dance organized to provide an opportunity for people to meet each other; as, on the first night of the conference they had a wine-and-cheese mixer. [PJC]
4. a nonalcoholic beverage (such as fruit juice, club soda or ginger ale) added to an alcoholic beverage to produce a mixed drink. [PJC]
5. any device used for mixing. [PJC]
6. 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. [PJC]
7. The technician who operates a mixer[6]. [PJC]