Sump"ter (?), n. [OF. sommetier the driver of a pack horse; akin to OF. & F. sommier a pack horse, L. sagmarius, fr. sagma a pack saddle, in LL., a load, Gr. a pack saddle, fr. to pack, load; cf. Skr. saj, sanj, to hang on. Cf. Seam a weight, Summer a beam.]
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.
© Webster 1913.
Sump"ter, a.
Carrying pack or burdens on the back; as, a sumpter horse; a sumpter mule.
Bacon.
© Webster 1913.