Yod

From SourceryForge

י

Latin Name	Yod
Numerical Value	10
Simple Meaning	Hand
Associated Tarot Card	The Hermit
Hebrew Letters: א aleph, ב bet, ג gimel, ד dalet, ה heh, ו vau, ז zain, ח chet, ט tet, י yod, ך,כ koph, ל lamed, מ,ם mem, נ,ן nun, ס samekh, ע ayin, ף,פ peh, צ,ץ tzaddi, ק qoph, ר resh, ש shin, ת tau.

Letter in Hebrew. Also means 10.

Described as a single letter in the Sepher Yetzirah, one of twelve.

He produced Yod, predominant in Labor, crowned, combined, and formed Virgo in the world, Elul in the year, and the left hand of man. (from the Sepher Yetzirah)

it is the first letter of the name of god, the tetragrammaton. So it is related to Atziluth - The world of Archetypes and to Fire.