NOTE: General complaining - not involving legal action or the law
Lots of people have complained about the noise.
You're always complaining!
He complained that his boss was useless and he had too much work.
She's complaining about a headache.
WordNet 3.0 Sense Numbers: 1
NOTE: LAW - To file a complaint
The neighbors complained to the police about the noise.
We have complained to the authorities and they will need to take action now.
The lawyer complained that the defendant had physically abused his client.
WordNet 3.0 Sense Numbers: 2