To make a long, low sound expressing physical or mental suffering or displeasure. She began to moan softly as the pain in her leg intensified.
To complain or grumble about something in a persistent and annoying way. He would often moan about the long hours he had to work.
Of the wind or another inanimate source: to emit a low, mournful sound. The wind moaned through the deserted streets.
To utter or express (something) in a moaning voice. "I can't go on," she moaned.