A Harmono-Chin is a metal structure worn by guitarists to enable them to play the guitar and the harmonica simultaneously.
"I love covering Dylon, but I need to get a harmono-Chin to rock it"

Tom -"Is someone strangling a cat?"
Neil - "No, that's just a harmono-Chin"

"Well fuck me. Carlin can actually play the Harmono-Chin!"
by Munki McBag April 15, 2010
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