kakuro /ˈkakʊrəʊ 
, kəˈk(j)ʊərəʊ / ▸ noun [mass noun] a type of number puzzle in which players insert numbers into a grid like that of a crossword, with numbered clues and some blank squares. – ORIGIN early 21st century: blend of Japanese kasan ‘addition’ and kurosu, representing a Japanese pronunciation of cross.
EnglishOxford Dictionary of English
