Saw covered in roundish marks (7)
I believe the answer is:
spotted
'saw' is the definition.
(I've seen this before)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for spotted that I've seen before include "Espied" , "Dappled - saw" , "Observed" , "Caught sight of; dotty" , "Seen; saw" .)