Addition column (4)
'addition column' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for ones that I've seen before include "Singletons" , "(Of ship) returning to port of origin" , "Units" , "Individuals" , "1 & 1 & 1" .)
'addition column' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for tens that I've seen before include "Cardinal numbers" , "X, X, X, ..." , "At least 20" , "Half-scores" .)