empty vessels, chalice, bowls, locks, images of fertility, rolling landscapes
tall buildings, keys, blades
eating, fighting
This tactic of referring to objects and references to apply sexual notions is also used in movies and television shows, not just literature. This helps to avoid censorship laws.
It is thought that Sigmund Freud's book 'The Interpretation of Dreams' first showcased our capacity to realize the sexual potential of the subconscious.
"...Hester never thought of meeting him in any narrower privacy than beneath the open sky."
page 190
The main idea portrayed in this chapter is that sex in literature is not portrayed as sex, but rather portrayed with objects and references.
Dickens knew that parents would most likely
Dickens knew that his books would be read by adults and children. So in order to keep the children away from raunchy material he used this reference tactic so that only the adults would understand