tailing

1. gerundparticiplepresentpresent participle and gerund of tail

plural tailings

1. The act of following someone.
2. architectureThe part of a projecting stone or brick inserted in a wall.

   […]iron Bar forming a Tailing for the stones which lie in the doorways

   1813, Benjamin Dean Wyatt, Observations on the Design for the Theatre Royal, Drury Lane

3. obsoleteThe lighter parts of grain separated from the seed by threshing and winnowing; chaff.
4. A prolongation of current in a telegraph line, due to capacity in the line and causing signals to run together.