cipher, cypher [ˈsaɪfə] (Music / Instruments) A defect in an organ resulting in the continuous sounding of a pipe, the key of which has not been depressed Yikes! When I came to teach an organ lesson on the Beckerath both last week and this, we were plagued with ciphers on at least six different notes.… Read More Uh-oh: Organ ciphers!