loin loin /ˈlɔɪn/

noun

1. Either side of the backbone between the hipbone and the ribs in humans as well as quadrupeds  ( loin , lumbus )
   either side of the backbone between the hipbone and the ribs in humans as well as quadrupeds
   
2. A cut of meat taken from the side and back of an animal between the ribs and the rump  ( loin )
   a cut of meat taken from the side and back of an animal between the ribs and the rump
    The grilled tuna loin was served with a side of vegetables
   The grilled tuna loin was served with a side of vegetables