A more thorough explanation:

Definition: A keeper is someone who is responsible for taking care of something and has legal responsibility for it. This can include custody or management of the item.

Examples:

• A dog's keeper
• A keeper of lost property

For example, a dog's keeper is someone who takes care of a dog and is responsible for its well-being. This can include feeding, walking, and providing medical care. Similarly, a keeper of lost property is someone who has custody of lost items and is responsible for returning them to their rightful owner.