Definition of phono in English:
 phono
adjectiveˈfəʊnəʊˈfɒnəʊˈfōnō
1Denoting a type of plug, and the corresponding socket, used with audio and video equipment, in which one conductor is cylindrical and the other is a central prong that extends beyond it.
 Example sentencesExamples
-  All RCA, phono and mini-jack plugs must be secured and not just simply plugged in.
 -  Because I wanted to be able to remove the DVD bracket out of the case on its own, I needed a method to disconnect the power cables; I choose some stereo phono plugs, and they will do the job.
 -  This is sent via a standard phono plug to a time code reader, and the spoken text in English.
 -  You can connect it to anything that makes a noise - television, hi-fi, MP3 player - and has a standard phono or scart socket.
 -  In planning for it I have discovered that my amp has no phono input.
 
- 1.1 Relating to a record player or turntable.
 
nounPlural phonos ˈfəʊnəʊˈfɒnəʊˈfōnō
A record player or turntable.
Origin
  
1940s: abbreviation of phonograph.
Rhymes
  
cui bono?, kimono, Mono, no-no