You use a buckle to hold something together, so a buckle in a dream represents the strength that you have that enables you to “hold yourself together” when you are faced with a difficult situation.
If you dream that you are trying to buckle something, it is a sign that there is a great deal of stress or chaos in your life and you are trying to find the strength to deal with things.
If a buckle comes apart or breaks in your dream, you are feeling overwhelmed and believe that you will not be able to cope.
A buckle prevents clothing from falling off, so a buckle in a dream can also represent something that protects you. It can represent protection against negative influences in your life.