A low sound associated with extended suffering, sorrow, and toil.
Heavily laden, as if to creak under the strain.
That groans.
A sorrowful cry; a lament.
Specifically, mourning.
The act of lamenting.
A group of swans.
lamentatio, (part of) a liturgical Bible text (from the book of Job) and its musical settings, usually in the plural; hence, any dirge