Also called Thurisaz (note that for the record I believe that the true origins of the runes were not named with letters that the futhark itself did not contain, thus Thurisaz could not be true as they had no z in their language.).
Divination: A rune testing and challenge. Also as protection and defense, both in passive (bramble fences) or active (Thor himself as guardian) nature. Protection from ones own folly
Reversed: Beware of protecting yourself from things you need, of others trying to protect you for there own needs.
Visually represents Thor's hammer, can also be seen as a thorn on a rose, beautiful yet can hurt if care isnt taken