ˌmiddle-ˈaged adjective1. between the ages of about 40 and 60:
a middle-aged businessman2. someone who seems middle-aged seems rather dull and does not do exciting or dangerous things:
Living with Henry had made her feel middle-aged.3. middle-aged spread fat that many people develop around their waist as they grow older
[TahlilGaran] Dictionary of Contemporary English ▲