courtesey to Ren Ren who wrote "In particular, the knife, persistently referred to as "surmene", is called the "circumpontian knife" (циркумпонтийский нож). This term is derived from the Greek word "Pont" (short for "Pont Euxin" - the Black Sea) and the Latin "circum" - around."
I stumbled again... upon something interesting and adding to the complexity of the Laz(istan) discussion.....this dance :
https://www.youtube.com/watch?v=mM45-Ao82zg
now the dance's name "horon" originates from the Greek language:
https://en.wikipedia.org/wiki/Horon_(dance)
and here "Pontus"is mentioned...with reference to the above
https://en.wikipedia.org/wiki/Pontus_(region)
which takes us again to Lazistan
https://en.wikipedia.org/wiki/Lazistan
and its people
https://en.wikipedia.org/wiki/Laz_people
and takes us to another dance....
https://www.youtube.com/watch?v=ftBHKwy52bA