1. An organ stop that produces a tone like that of the brass wind instrument.

2. Aeoline definition is - a very soft organ stop of mild string quality —called also aeolodicon.

3. Bourdon definition: a 16-foot organ stop of the stopped diapason type Meaning, pronunciation, translations and examples

4. Bifara definition is - an organ stop of 4' pitch or 8' pitch in which each pipe has two mouths so as to cause a gentle vibrato effect; also : a similar stop with pipes of both 4' pitch and 8' pitch one of which is slightly sharped to produce a comparable vibrato effect.