“Crooked,” “Curved”
There is several rivers in Britain called Cam.
One of them flows near Cadbury Castle, which is located in South Cadbury, Somerset, England. The river is small and passes near the base of the castle, which is an Iron Age hill fort known for its archaeological significance and association with Arthurian legends.
In a nearby field called Westwoods, a large number of skeletons bear grim testimony to a battle fought on that site, and it has been suggested that this was the site of Camlann, Arthur’s final battle. Others identifies this as the River Cam upon which Cambridge is situated, and that has subsequently led to the identification of that city with Camlann.
Source
Physical topography in Britain and elsewhere.