Noun | 1. | ![]() electric organ, electronic organ, Hammond organ, organ - (music) an electronic simulation of a pipe organ musical instrument, instrument - any of various devices or contrivances that can be used to produce musical tones or sounds synthesiser, synthesizer - (music) an electronic instrument (usually played with a keyboard) that generates and modifies sounds electronically and can imitate a variety of other musical instruments theremin - an electronic musical instrument; melodies can be played by moving the right hand between two rods that serve as antennas to control pitch; the left hand controls phrasing |