fourth principle of the Eight Principles of Yong; hook at the end of a stroke
Technical calligraphy term referring to the hook-like finishing stroke, specifically the fourth of the Eight Principles of Yong (永字八法). Rare outside specialized contexts.
See also: 永字八法
The fourth principle of the Eight Principles of Yong is called 'teki'.
There is a hook at the end of the vertical stroke in this character.