Nehiloth (plural)

Boyd’s Bible Dictionary:

(perforated). The flute and similar wind instruments (Psa. 5, title).

Concise Bible Dictionary:

This word occurs only in the heading of Psalm 5. It is supposed to refer to some wind instrument or choir, but its meaning is uncertain.

Strong’s Dictionary of Hebrew Words:

Number:
5155 (find all occurrences in KJV Bible)
Transliteration:
nchiylah
Phonic:
nekh-ee-law’
Meaning:
probably denominative from 2485; a flute
KJV Usage:
(plural) Nehiloth

Jackson’s Dictionary of Scripture Proper Names:

we shall cause profanation: we shall divide the inheritance

Potts’ Bible Proper Names:

Perforated:―the flute and similar wind instruments, Psa. 5: Title. {Perforata}