Endless, labyrinthine passageways, form which the dreamer can find no way out, are a frequent dream image.  In Greek mythology the Cretan labyrinth was the dwelling-place of the Minotaur, the son of the bull-god.  The Greek hero Theseus defeated the Minotaur after being given a ball of wool by Ariadne, the Minotaur's sister.  He fastened the end of the ball of wool ( referred to as Ariadne's clew) at the entrance and was thus able to find his way out of the labyrinth again after killing the Minotaur.
Theseus owes his life to Ariandne's ball of wool, and so she here symbolizes the intellectual aspects of womanhood.  The bull-like monster in the labyrinth, the Minotaur, appears as a symbol of the sex drive, something which for the consciousness must remain impenetrable.  Man's intellectual and spiritual relationship to woman, symbolized here by Ariadne's clew, enables the hero to survive the dangerous adventure and to conquer the bull within himself.  in the myth, though a resolution, of this conflict is already anticipated, A ladyrinth in a dream usually signifies solely the dangerous elements of the story.

The concept of lameness or paralysis is unequivocal, even as a dream image.  It should be understood as a sign on being intellectually or psychically impeded.  The further developments in the dream are decisive for the interpretation.

Leather clothing, leather whips etc., in a dream indicate strong aggressive tendencies.  Leather is a fetish with sadomasochists; i.e., am object on which sexuality becomes neurotically fixed.  When interpreting leather or leather objects in a dream, attention should be paid to sadistic and aggressive tendencies.

The lion often indicates hidden emotional disturbances.  It can also appear as the symbolic image of strong mental forces, as the lion in our culture is a symbol of sovereignty.

In most popular legends, locks and keys have a sexual significance.  This arises form the analogy of the union of man and woman.  In fairytales, however, the key is also a symbol of revelation.  In general, the dream image of a lock indicates an attitude of reserve.  If the context indicates that the lock can be indicated as a symbol of the female genitals, this can be a reference to a woman needing protection or to female frigidity. The image of the key which fits the lock is an indication of the possibilities of alteration and change. As a counterpart to the lock, the key has a masculine significance.  It symbolizes male strength and sovereign power.

The locomotive is a symbol of collective energy.  It symbolizes forces in society which support the dreamer during his passage through life.