mixer
Concise Oxford English Dictionary © 2008 Oxford University Press:
mixer/ˈmɪksə(r)/
▶noun
- 1 a machine or device for mixing things.
- 2 a person considered in terms of their ability to mix socially: a good mixer.
- 3 a soft drink that can be mixed with alcohol.
- 4 (in recording and cinematography) a device for merging input signals to produce a combined output.
■ a person who operates a mixer.
'mixer' also found in these Oxford entries:

