oxbow

Short definition from Wiktionary

Noun

1. 1
   A U-shaped piece of wood used as a collar for an ox, the upper parts of which are fastened to its yoke.
2. 2
   A meander in a river; the land enclosed by such a loop.

Proper noun

1. 1
   A town in North Dakota.
2. 2
   A town in Saskatchewan, Canada.