檡
1. [~棘] A type of tree mentioned in ancient texts, characterized by dense and tough wood, which can be used to make the thumb ring for archery, as in "decisively using the right, the monarch's thorn is like ~."
2. Black date.
3. [於(wū)~] An ancient term synonymous with "於菟," referring to the tiger in ancient China as called by the Chu people.