(1):

(v. t.) To afflict; to distress.

(2):

(v. i.) To emit a sound like moan; - said of things inanimate; as, the wind moans.

(3):

(v. t.) To bewail audibly; to lament.

(4):

(v. i.) A low prolonged sound, articulate or not, indicative of pain or of grief; a low groan.

(5):

(v. i.) To make a low prolonged sound of grief or pain, whether articulate or not; to groan softly and continuously.

(6):

(v. i.) A low mournful or murmuring sound; - of things.