Collins English-English Dictionary

organ ['ɔːgən]

1. 1. n pipe organ a large complex musical keyboard instrument in which sound is produced by means of a number of pipes arranged in sets or stops, supplied with air from a bellows. The largest instruments possess three or more manuals and one pedal keyboard and have the greatest range of any instrument

2. 2. n

3. 3. n (as modifier)

   organ pipe

   organ stop

   organ loft

4. 4. n any instrument, such as a harmonium, in which sound is produced in this way - See also reed organ harmonica

5. 5. n short for electric organ electronic organ

6. 6. n a fully differentiated structural and functional unit, such as a kidney or a root, in an animal or plant

7. 7. n an agency or medium of communication, esp a periodical issued by a specialist group or party

8. 8. n an instrument with which something is done or accomplished

9. 9. n a euphemistic word for penis

10. 10. n [Etymology] C13: from Old French organe, from Latin organum implement, from Greek organon tool; compare Greek ergein to work