Definition of: mourn

(môrn, mōrn) v.i.
1. To feel or express grief or sorrow.
2. To display the conventional signs of grief after someone's death; wear mourning.
—v.t.
3. To grieve or sorrow for (someone dead).
4. To grieve over or lament (misfortune, failure, etc.); bewail; deplore.
5. To utter in a sorrowful manner. [OE murnan] Synonyms: bemoan, bewail, deplore, grieve, lament, regret, rue, sorrow. Mourning is thought of as prolonged; grief or regret may be transient. One may grieve or mourn, regret, rue, or sorrow without a sound; he bemoans with suppressed and often inarticulate sounds of grief; bewails with passionate utterance, whether of inarticulate cries or of spoken words; he laments in plaintive or pathetic words.