One of nine in a Sudoku grid (3)
I believe the answer is:
row
(Other definitions for row that I've seen before include "'Quarrel, dust-up (3)'" , "Use an oar" , "bank?" , "Propel boat with manual aids" , "One of the ranks" .)
I believe the answer is:
row
(Other definitions for row that I've seen before include "'Quarrel, dust-up (3)'" , "Use an oar" , "bank?" , "Propel boat with manual aids" , "One of the ranks" .)