flute

Boyd’s Bible Dictionary:

(blow, flow). Flute or “pipe,” made of reeds or copper, and similar to those of today (Dan.3:5-15; 1 Kings 1:40).

Concise Bible Dictionary:

Reed or pipe blown with the mouth, but its construction is not definitely known (Dan. 3:5, 7, 10, 15).

Strong’s Dictionary of Hebrew Words:

Transliteration:
mashrowqiy
Phonic:
mash-ro-kee’
Meaning:
(Aramaic) from a root corresponding to 8319; a (musical) pipe (from its whistling sound)
KJV Usage:
flute