Greek characters written around bottom of some columns? (3)
I believe the answer is:
sum
'bottom of some columns?' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for sum that I've seen before include "Arithmetic calculation" , "Quantity of money" , "Add together" , "Aggregate, total" , "Amount, aggregate" .)