The phrase "strong bones" refers to having healthy and sturdy bones in your body. It means that your bones are strong and less likely to break or get injured easily. Full definition
Ice cream does contain calcium, important for building strong bones and teeth. (babygaga.com)
Just as astronauts lose bone mass in space as a response to the decreased need for strong bones in a zero gravity environment, weight bearing exercise increases bone mass. (wellnessmama.com)
Studies suggest that vitamin K help maintain strong bones in the elderly. (dietgrail.com)