Is “Kolos” a Scrabble word?
Yes
KOLOS
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Kolos
noun
1.A national folk dance common in regions pertaining to South Slavic people, performed in a circle.
“1942: As we came to this promenade [...] we heard the throbbing of a drum that announces a kolo, a communal dance. — Rebecca West, Black Lamb and Grey Falcon (Canongate 2006, p. 660)”