Examples from the Web for dabber
Some engravers prefer the dabber to the roller even for regrounding entire plates.
But if you desire to do your own proving, you will have to use a dabber, the manner of making which is described in the next note.
Clay of the desired thickness is then rolled out as described and applied to the mould and dabbed flat with a sponge or dabber.Pottery, for Artists Craftsmen & Teachers|George J. Cox
A sheet of damp paper was laid on it and the back of the paper was carefully rubbed with a dabber or burnisher.Books Before Typography|Frederick W. Hamilton
After the dabber has been used for some time, and the ink has hardened in it, cut off another slice so as to get a fresh surface.