Boyd’s Bible Dictionary:
(harp). (1) Wife of Esau (Gen. 28:9). (2) Wife of Rehoboam (2 Chron. 11:18). (3) The tune or the instrument (Psa. 53; 88, titles).
“Mahalath” From Concise Bible Dictionary:
1. Daughter of Ishmael and wife of Esau (Gen. 28:9). See BASHEMATH.
2. Daughter of Jerimoth and wife of Rehoboam (2 Chron. 11:18).
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
Meaning:
the same as 4257; sickness; Machalath, the name of an Ishmaelitess and of an Israelitess
Jackson’s Dictionary of Scripture Proper Names:
making sick: sickness: appeasing
Potts’ Bible Proper Names:
Compassion; singing; sickness:―name of an Ishmaelitess and of an Israelitess [BASHEMATH], 2 Chron. 11:18. {Commiseratio}