The Hebrew noun nechiylah refers to a flute or pipe, a wind instrument used in worship. It appears in the superscription of Psalm 5 as a musical direction, indicating the psalm was to be accompanied by flutes. The word may derive from a root meaning "to bore" or "to pierce," referring to the hollow bore of the instrument.
The flute was integral to Israelite worship, used in both joyful celebrations and solemn laments. Its appearance in psalm superscriptions reveals the richness and diversity of ancient worship — God was praised not only with voices and strings but also with wind instruments. The flute's plaintive, penetrating tone was particularly suited to psalms of petition and lament, expressing the deep longing of the human heart before God.