Definify.com
Webster 1913 Edition
Sumpter
Sump′ter
,Noun.
1.
The driver of a pack horse.
[Obs.]
Skeat.
2.
A pack; a burden.
[Obs.]
Beau. & Fl.
3.
An animal, especially a horse, that carries packs or burdens; a baggage horse.
Holinshed.
Sump′ter
,Adj.
Carrying pack or burdens on the back;
as, a
sumpter
horse; a sumpter
mule. Bacon.
Webster 1828 Edition
Sumpter
SUMP'TER
,Noun.