Mahalath

“Mahalath” From Concise Bible Dictionary:

3. Name in the title of Psalm 53. Its meaning is not known. Some suppose that a mournful tune is referred to, or that it was written for a time of sorrow. Gesenius takes it as a harp or stringed instrument.

“Mahalath Leannoth” From Concise Bible Dictionary:

This occurs in the title of Psalm 88. The psalm is very solemn, and these words are supposed to appoint it to be sung to a mournful strain.

Strong’s Dictionary of Hebrew Words:

Transliteration:
machalath
Phonic:
makh-al-ath’
Meaning:
from 2470; sickness; Machalath, probably the title (initial word) of a popular song
KJV Usage:
Mahalath

Jackson’s Dictionary of Scripture Proper Names:

making sick: sickness: appeasing

Potts’ Bible Proper Names:

Sickness; the spiritual malady of the sons of men:―[MALAH], Psa. 53: Title. {Morbus}