Definition of "Lament" :
noun: a mournful poem; a lament for the dead
noun: a song or hymn of mourning composed or performed as a memorial to a dead person
noun: a cry of sorrow and grief
"Their pitiful laments could be heard throughout the ward."
verb: regret strongly
"We lamented the loss of benefits."
verb: express grief verbally
"We lamented the death of the child."