to make a low prolonged sound of grief or pain, whether articulate or not; to groan softly and continuously.-to emit a sound like moan; -- said of things inanimate; as, the wind moans.-to bewail audibly; to lament.-to afflict; to distress.-a low prolonged sound, articulate or not, indicative of pain or of grief; a low groan.-a low mournful or murmuring sound; -- of things.