Definition of "knot-hole" []

• A hole in a board or plank formed by the falling out of the piece of a knot, node, or knur left when the plank was sawed. (noun)

The Century Dictionary (Public Domain)

• "A rat in the shelter of a knot-hole making a noise as beast-like as any rat ever made!"
• "Nah, he likes the texture; reminds him of the knot-hole in the fence …"
• "But there was no motion about the place on which 1 lay, no gentle rocking as there should have been as we lay at anchor in the Chesapeake; I opened eyelids that seemed to have been glued together, expecting to see the knot-hole in the floor of the bunk above me, as I'd seen it with every awakening for the past many weeks."