from The Century Dictionary and Cyclopedia
- n. The small circular indentation on one side and near the shoulder of a printing-type. It is made by the pin which dislodges the type from the mold in which it was cast.
Sorry, no etymologies found.
Here and there the tools had left a faint scratch, only deep as the width of Broadway and a bagatelle of five hundred feet in length; but that detracted no more from the unblemished four-square contour of the entire mass than a pin-mark from the symmetry of a door-post.