As a form, set, or routine, Tantui can be found in many Northern styles of Chinese martial arts.
The term tan tui itself has been translated into English a variety of ways, with the most prevalent equating to "Springing Leg."
In standard Mandarin Chinese, this is represented by the Pinyin romanization as Tuǐ, and literally means leg, thigh, shank, etc.
However, in the world of martial arts, this has generally been accepted to mean 'kick,' or more specifically, a type of front snap kick.
The exact reasoning for the variations is unknown, however may be tied-in with the varying accounts of the form and / or style's origins and history.