Definition of blue-vinnied in US English:

blue-vinnied

adjective

English Regional, South-Western
  • Blue-veined; specifically (of cheese) having veins of blue mould. Also more generally: (of food) mouldy.

Origin

Mid 19th century. From blue + vinnied. Compare Blue Vinney.

Pronunciation

blue-vinnied

/ˌbluːˈvɪnid/