Merriam-Webster's Collegiate® Dictionary, 11th Edition
HOOP
I. noun
Usage: often attributive
Etymology: Middle English, from Old English hōp; akin to Middle Dutch hoep ring, hoop
Date: 12th century
a circular strip used especially for holding together the staves of containers or as a plaything,
2. a circular figure or object ; ring , the rim of a basketball goal, a circle or series of circles of flexible material used to expand a woman's skirt, basketball , hooplike adjective
II. transitive verb
Date: 15th century
to bind or fasten with or as if with a hoop, hooper noun