If you cling to someone or something, you hold onto them tightly.

If someone clings to a position or a possession they have, they do everything they can to keep it even though this may be very difficult.

Clothes that cling to you stay pressed against your body when you move.

Something that is clinging to something else is stuck on it or just attached to it.

If someone clings to a person they are fond of, they do not allow that person to be free or independent.

If you cling to an idea or way of behaving, you continue to believe in its value or importance, even though it may no longer be valid or useful.