1. statements expressing dissatisfaction or annoyance about something
Usage: plural of complaint
2. formal statements alleging that someone has done something wrong or illegal
Usage: legal context
3. symptoms of illness or medical conditions
Usage: medical context

Examples

• The manager received several complaints about the noisy construction work.
• Customer complaints about the product led to a recall.
• She filed formal complaints against her supervisor for harassment.
• The police investigated complaints of vandalism in the neighborhood.
• His main complaints were headaches and fatigue.
• The doctor asked about any new complaints since her last visit.