retains or directs the emotional content of the psyche.
allows for the important act of moral purification even though instinctual personification luring the dreamer toward sexual activities can initially appear around the sink; see Washing.
the plug in the sink: symbolizes safe work with one's feelings in which the dreamer can accurately measure the emotions or cleansing process (increase or decrease water as necessary).
dirty: instincts are disturbing an emotional perception.
an armchair changes into a sink: significant effort has transformed a cleaned dependency (the chair) in an emotional environment and it can carry emotional content (flow like water) guided by the will.