from The Century Dictionary.
- noun One who hangs back; a loiterer; one who falls behind.
- Lingering; hanging back; lagging.
Sorry, no etymologies found.
Mistress Wynter, at that fat soggy thing, that lag-last, so shiftless and useless about the house, lazing from rath to latte, and then to complete their exasperation, miching off into the woods to shirk her work so that the whole company had to turn out with a mort of trouble to hunt for the leg-trape.