Thurl

Webster's Dictionary of the English Language

·noun A long adit in a coalpit.

II. Thurl ·noun A hole; an Aperture.

III. Thurl ·noun A short communication between adits in a mine.

IV. Thurl ·vt To cut through; to Pierce.

V. Thurl ·vt To cut through, as a partition between one working and another.