i Register
In some senses, tailing is marked as obsolete. Watch for register when choosing this word.
noun
The act of following someone.
The part of a projecting stone or brick inserted in a wall.
[…]iron Bar forming a Tailing for the stones which lie in the doorways
The lighter parts of grain separated from the seed by threshing and winnowing; chaff.
A prolongation of current in a telegraph line, due to capacity in the line and causing signals to run together.