Definition of hoopers:
(n) :
A circular band of metal used to bind a barrel.
(n) :
Any circular band or ring.
(n) :
A circular band of metal, wood, or similar material used for forming part of a framework such as an awning or tent.
(n) :
A quart-pot; so called because originally bound with hoops, like a barrel. Also, a portion of the contents measured by the distance between the hoops.
(n) :
(basketball) The rim part of a basketball net.
(n) :
(US, in the plural, metonymic) The game of basketball.