Lament v. i. : To express or feel sorrow; to weep or wail; to mourn.

Lament v. t. : To mourn for; to bemoan; to bewail.

Lament v. : Grief or sorrow expressed in complaints or cries; lamentation; a wailing; a moaning; a weeping.

Lament v. : An elegy or mournful ballad, or the like.

Example:
How is tone used in the poems the Lesson and Lament?

Taxonomy
lament, Cambridge University Press, The ritual lament in Greek tradition, Praise and Lament in the Psalms, free encyclopedia, Dido's lament, opera, elements, oral traditions, Margaret Alexiou, human history, women, Batya, fixture, respiri, aria, literature, Rosand.

Defination from the web:
lament continued to represent a musico-dramatic high point. In the context of opera buffa, the Countess's lament, "Dove sono" comes ... The heroine's lament remained a fixture in romantic opera, and the Marschallin's monologue in Act I of Der Rosenkavalier can be understood as a ...