Definition of mourn

• v. i. - To express or to feel grief or sorrow; to grieve; to be sorrowful; to lament; to be in a state of grief or sadness.
• v. i. - To wear the customary garb of a mourner.
• v. t. - To grieve for; to lament; to deplore; to bemoan; to bewail.
• v. t. - To utter in a mournful manner or voice.