Psychological / emotional perspective: If we are putting handcuffs on someone, we may be attempting to bind that person to us and assert our supremacy over them or what they represent in the dream. We may be being overly possessive.... Dream Meanings of Versatile
Material aspects: Dreaming of being in handcuffs denotes that we have been restrained in some way, possibly by an authority figure. We may ourselves feel that we need to be more circumspect. ‘Joke’ handcuffs are often taken as symbols of marriage or committed partnership. In dreams their deeper meaning may signal some doubts about the relationship.... Dream Meanings of Versatile
Unlike tied hands, a dream of being handcuffed is an omen of contrary and promises a release from worry.
To see others handcuffed signifies security and protection, and to snap them on someone in your dream predicts an unexpected improvement in your lifestyle.... The Complete Guide to Interpreting Your Dreams
Handcuffs are used to bind someone in order to restrict their movements, usually in the case of criminal activity. In this way, they connect symbolically to this sense of restriction and the inhibition of freedom, but also to the consequences of behaviors and choices you may have made that have resulted in such restriction. There is a secondary meaning to handcuffs as paraphernalia in sexual play where this type of binding is considered erotic.
If the latter is the case, you may want to investigate whether sexual issues are inhibiting your freedom.... Complete Dictionary of Dreams
Vision: You are handcuffed: meeting a former lover makes you sad, but feelings of regrets are too late. Putting handcuffs on someone else: you can’t force love—it will only break your heart.
Depth Psychology: Shackles are sign of being captivated by illusionary love. Sometimes a dream about shackles or handcuffs indicates nervous tension, less often masochism or sadism. Who or what holds you in shacldes? From what shackles would you like to free yourself?... Dreamers Dictionary