Also see definition of "Organ" in Word Study
Study Dictionary
Organ
Organ [EBD]
some kind of wind instrument, probably a kind of Pan's pipes (Gen. 4:21; Job 21:12; Ps. 150:4), which consisted of seven or eight reeds of unequal length.
ORGAN [SMITH]
(Genesis 4:21; Job 21:12; 30:31; Psalms 150:4) The Hebrew word thus rendered probably denotes a pipe or perforated wind-instrument. In (Genesis 4:21) it appears to be a general term for all wind-instruments. In (Job 21:12) are enumerated three kinds of musical instruments which are possible under the general terms of the timbrel harp and oryan. Some identify it with the pandean pipe or syrinx an instrument of unquestionably ancient origin, and common in the East. [See Music]Also see definition of "Organ" in Word Study