| Back River | |
| —n | |
| a river in N Canada, flowing northeast through Nunavut to the Arctic Ocean. Length: about 966 km (600 miles) | |
| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |
| a gadget; dingus; thingumbob. |