Mahalath Leannoth Maschil
Easton, 1897
This word leannoth seems to point to some kind of instrument unknown (Psalms 88, title). The whole phrase has by others been rendered, "On the sickness of affliction: a lesson;" or, "Concerning afflictive sickness: a didactic psalm."
Dictionary: M. G. Easton, Illustrated Bible Dictionary (1897, public domain).