Seeing “aperture”
in your dream

(See Attic window; Window)

It could also mean troubles and unhappiness.
Blood refers as well to the person’s good or bad genie that runs in him like the bloodstream.
When seen in a jar or any container, blood represents menstruation. The cover of that jar or whatever is used to stuff its aperture is the cotton or hygienic towel.
In some cases, blood symbolizes what could not happen to a human being unless dead, like red blood from a patient turning blue or yellow.

(Aperture; Peephole; Window) If one's attic window towers over a large and a beautiful property in the dream, it means owning or acquiring a new property, earning respect, honor and fulfilling one's aspirations. If the view from one's attic window is depressing in the dream, then it means relief from difficulties, or if one is sick, then it means recovering from his illness, or if he is unmarried, then it means that he will get married.

(Attic window; Aperture; Opening; Peephole) In a dream, a large window represents a woman of good character and conduct, while a tight window means the opposite. If a man sees himself sitting inside a window in a dream, it means that he will divorce his wife in public. If one sees himself sitting at a distance from the window in a dream, it means that he will secretly divorce his wife. In a dream, the windows of a house also represent an outsider who is aware of the inner secrets of such a house.