A prolonged lamentation; sound of grief; a low, drawn out, mournful sound, usually indicating sorrow or pain: At the news of the king's death, a loud moan rose from the crowd.

To make a sound of lamentation or an expression of grief or a similar sound made by something or someone: Jillian was heard to moan in sorrow when her favorite pet was injured.

The wind was known to moan in the trees next to the house on windy nights.

1. Having cut down plants; for example, grass with a specifically designed machine: The lawn was neatly mown using the new lawn mower.
2. When used in a violent connotation; such as, to have cut down or to have eliminated people by using a gun or similar equipment; to destroy a great number of people, as in battle: The victims were mown down by the gangsters who used a machine gun.