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a. Also called pipe organ. a musical instrument having one or more sets of pipes actuated by keyboard and sounded by compressed air.
b. a similar musical instrument having the tones produced electronically: an electronic organ.
c. reed organ.
e. hand organ.
2. a grouping of tissues into a distinct structure, as a heart or kidney in animals or a leaf or stamen in plants, that performs a specialized task.
3. a newspaper, magazine, or other means of communicating information, thoughts, or opinions, esp. in behalf of some organization or political group.
4. an instrument or means, as of action.
[before 1000; Middle English: musical instrument, pipe organ, organ of the body, tool « Greek órganon implement, tool, bodily organ, musical instrument, akin to érgon work]
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|Noun||1.||pipe organ - wind instrument whose sound is produced by means of pipes arranged in sets supplied with air from a bellows and controlled from a large complex musical keyboard|
keyboard - device consisting of a set of keys on a piano or organ or typewriter or typesetting machine or computer or the like
keyboard instrument - a musical instrument that is played by means of a keyboard
stop - (music) a knob on an organ that is pulled to change the sound quality from the organ pipes; "the organist pulled out all the stops"