What does the title Wuthering Heights symbolize?

The title Wuthering Heights is symbolic of the characters and relationships in the novel.  

First of all, the title of the novel symbolizes the setting in which the house of the same name is situated. Wuthering Heights is set in the northern English moors, a rough, inhospitable climate prone to the harshest of winters. The house by the same name sits high on a hill near some rocky crags. The word "wuthering" means, as Lockwood tells us, being prone to "...atmospheric tumult...in stormy weather." The area is pummeled by high winds throughout most of the year.

As a result, the house looks and feels harsh, cold and stormy. The architecture used to deflect the wind's damage symbolizes this depressing mood. Deeply inset windows and jutted corners are two examples; this particular architecture can make the house appear dark and cold, both outside and inside.

The windy, stormy weather suggested by the word "wuthering" also symbolizes the lives of the family who live inside. Their relationships and situations are stormy and dark, just as their home and setting are stormy and dark, as contrasted with neighboring Thrushcross Grange, situated in a grassy, lower-lying area with happier residents.