1 [intransitive and transitive] informal
to complain in an annoying way, especially in an unhappy voice and without good reason:
'I feel seasick already,' she moaned.
A lot of people moaned about the parking problems.
moan at British English
My mum never stops moaning at me.
He's always moaning that we use too much electricity.
He moaned and groaned all the way there.
to make a long low sound expressing pain, unhappiness, or sexual pleasure [= groan]:
She moaned and cried out in pain.
3 [intransitive] literaryCDN
if the wind moans, it makes a long low sound:
They could hear the wind moaning in the trees.
—moaner noun [countable] British English
Dad's a gloomy old moaner.