Bollock dagger
Yea what he said. It was a very common dagger that lasted well in to the 16th century. Off the top of my head I am not sure when they made their first appearance in medieval times. I think sometime in the 13th century. Some say the Scottish dirk evolved form the bullock dagger. Both styles of knife served the same function. They seem to have originally been worn on the front of the belt by knights. Who used them as a boast just as the look suggests. Over time they became one of the most common forms of utility knife, and were worn by all classes of people. 15th century illustrations and paintings show them worn on the side of the belt or behind kidney pouches like any other common dagger. A large number were found on the MaryRose. Many times they included a small eating knife and pricker( Which was just a sharpened spike with a handle used for stabbing and holding food like a fork) that were set into the outsider of the scabbard. They took many forms over time. They could be crudely made or made of the finest of materials.Don't panic it just refers to the hilt which looks like a pair of bollocks. If you want use the Victorian term kidney dagger. ;-)