Name: Resh
Transliteration: R
Picture: Head of a man.
Meaning: The head is seen as the top of the body and can be the top or head of anything such as the body, time, mountaintop, rank, etc. This letter can also represent a man.
Definition: A Man

Name: Yud
Transliteration: Y
Picture: An arm and closed hand.
Meaning: The closed hand represents the idea of work, throw, make, etc.
Definition: The Working hand

Transliteration: YaR
Picture: Hand of man.
Meaning: The work of a man's hand.
Definition:
Reference:

Transliteration: Ya-RaH (yarah)
Meaning: This root has the more specific meaning of the "throwing of the hand of man" and can mean "throw" and "point" (in the sense of throwing the finger in a direction).
Comments: This child root is formed by placing the letter (Hey - H) to the end of the root.
Definition: Throw / Point
Reference: Genesis 46:28 (direct), Exodus 4:12 (teach), Exodus 15:4 (throw)

Transliteration: MoW-ReH (moreh)
Meaning: A Moreh is 'one who throws from the hand'. This can be the "archer" who throws the arrow, or a "teacher" who throws the finger in the way the student is to go.
Comments: Nouns are derived from the root by making one or two changes to the original root. The noun moreh is made by adding the letter (mem - M) to the front of the word. When the first letter of the root is a (Yud - Y) and another letter is added to the front of the root, the Yud is replaced by the letter (waw, which can be pronounced as a W, ow or uw).
Definition: Teacher
Reference:

Transliteration: ToW-RaH (Torah)
Meaning: Torah is "what is thrown by the Moreh". This can be the "arrow" from the archer or the "direction" (teachings and instructions) from the teacher. The true Hebraic understanding of "Torah" is "instructions" and "teachings" such as from a father to his children.
Comments: This noun is formed the same way as the word moreh, with a (Tav - T) instead.
Definition: Teachings
Reference: Genesis 26:5