To protect (an asset) from loss or destruction
To keep safe from danger, attack, or harm
To keep in a condition of good repair, efficiency, or use
To prepare (food) for storage and future use
Public land kept for a special purpose
He wanted to protect her and preserve her innocence.
It still depends on Your Majesty to preserve humanity from the calamity of another war.
He had to preserve and protect the underworld, even if it meant stepping away from the comfort zone he'd existed in for millennia.
Were preserved meats invented to preserve meat merely?
It was a royal preserve, and remains for the most part an uncultivated waste, but it is also a rich coalfield, and there are mines in every direction.