Interesting thread...it does make you wonder how many other weapons may have gained a 'universal' name because of mistakes in translation/ language difficulties, or as a result of a name given to a weapon that perhaps was very localised to a small area (and that person was asked by the 'researcher' what 'it' was) but had a different more common name over the entire region.
I think, if the 'story' of how the choora was so named, is true. It seems likely that this would be because of language difficulties, (or an abusive interpretor

)
If this knife was used for catration

surely there would be documented evidence.....AFAIK knights had a dagger called a bollock knife, it was used to pierce the relatively unprotected groin area......could this be perhaps a possibility in the manner it was used