Webster's Revised Unabridged Dictionary · 1913

Moan

Moan (mōn) , intransitive verb

[Anglo-Saxon manan to moan, also, to mean; but in the latter sense perh. a different word. Compare Mean to intend.]

1.
To make a low prolonged sound of grief or pain, whether articulate or not; to groan softly and continuously.
Unpitied and unheard, where misery moans. — Thomson
Let there bechance him pitiful mischances, To make him moan. — Shakespeare
2.
To emit a sound like moan; -- said of things inanimate; as, the wind moans.

Moan , transitive verb

1.
To bewail audibly; to lament.
Ye floods, ye woods, ye echoes, moan My dear Columbo, dead and gone. — Prior
2.
To afflict; to distress. [Obsolete]
Which infinitely moans me. — Beau. & Fl

Moan , noun

[Old English mone. See Moan, v. i.]

1.
A low prolonged sound, articulate or not, indicative of pain or of grief; a low groan.
Sullen moans, hollow groans. — Pope
2.
A low mournful or murmuring sound; -- of things.
Rippling waters made a pleasant moan. — Byron