chiff means the characteristic sound made as part of the attack of certain notes on the organ. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
noun
- The characteristic sound made as part of the attack of certain notes on the organ.“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.”