Definition from Wiktionary, the free dictionary
fanny pack (plural fanny packs)
- (Canada, US) A small fabric pouch secured with a zipper and worn at the waist by a strap around the hips.
- She wears her fanny pack every day on her morning jog around Central Park.
While fanny is acceptable in Canada and the US, the term can be offensive in other countries.
- “fanny pack” in the Canadian Oxford Dictionary, Second Edition, Oxford University Press, 2004.