Dab, as with a paper towel (4)
I believe the answer is:
blot
(Other definitions for blot that I've seen before include "Spot of ink, paint etc" , "Smudge of ink" , "Dark mark or stain" , "Stain (on landscape?)" , "Blemish made with ink" .)
I believe the answer is:
blot
(Other definitions for blot that I've seen before include "Spot of ink, paint etc" , "Smudge of ink" , "Dark mark or stain" , "Stain (on landscape?)" , "Blemish made with ink" .)