1) European martial art 2) Medieval pole weapon 3) Medieval weapon 4) Staff 
• (n.) A long and stout staff formerly used as a weapon of defense and offense; -- so called because in holding it one hand was placed in the middle, and the other between the middle and the end.
a staff of wood from 6 to 9 feet (about 2 to 3 m) long, used for attack and defense. It is probably the cudgel or sapling with which many legendary ...
Quar'ter·staff` noun ; plural Quarterstaves A long and stout staff formerly used as a weapon of defense and offense; -- so called because in holding it one hand was placed in the middle, and the other between the middle and the end. 
[n] - a long stout staff used as a weapon
noun a long stout staff used as a weapon
a former English weapon consisting of a stout pole 6 to 8 ft. (1.8 to 2.4 m) long, tipped with iron. · exercise or fighting with this weapon.