CHET 

Pronunciation: chet, ches, or cheth (ch as in Bach)
Numerical value: 8
Primary meaning: Protective fence
Secondary meanings: Separation, fear, life
Essence: Sight
Astrological continuum: Cancer 
Time continuum: Hebrew month of Tammuz 
Soul continuum: Right hand
Sephirot: Path between Kindness (Chesed) and Harmony (Tiferet)
Verse from Torah: God called the firmament heaven.
Form: A letter Vav and a Zayin connected by a ^
Sefer Yetzira (Book of Creation)

Both in meaning and form, Chet is a fence. It suggests protecting what is yours, the spiritual bounty that one has acquired. It is also the fence that protects one from sin, granting safety and belonging. Chet is made of the feminine Vav and the masculine Zayin. The combining of the two with arrow (^) upwards is symbolic of marriage within which man and woman unite to elevate themselves for a Godly purpose. This is why the letter Chet has the shape of a chupah (wedding canopy), because marriage is a protection from sin, and it provides safety and belonging. Once a person has this security, he or she is protected from fear and can overcome previously difficult situations.

The letter Chet symbolizes the drastic difference between good and evil. It represents the sin (chet, in Hebrew) as well as the purification. One whose name begins with Chet is independent, sensitive, and loves nature. They often act hastily and are stubborn in their actions. (Shemot Bnei Adam)