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Definition 2024

chiff ‎(uncountable)

(music) The characteristic sound made as part of the attack of certain notes on the organ.
- 1998, Fletcher, N.H. and Rossing, T.D, The Physics of Musical Instruments, Springer Science & Business Media, page 570
  In all these adjustments, the voicer must have regard to the steady sound of the pipe, to its promptness of speech, and to the presence or absence of any desired starting transient or chiff.