syce , sice, saice n
1 (formerly, in India) a servant employed to look after horses, drive carriages, etc.
2 (in Malaysia) a driver or chauffeur
(C17: from Urdu sa'is, from Arabic, from sasa to administer)
Again I thought an image might help, though only one appeared relevant this time:
The Tibet Album. "Syce with horse and mule on the Kambala Pass" 05 Dec. 2006. The Pitt Rivers Museum. Accessed 15 May. 2008
Notes from The Tibet Album "A syce leading a mule and a pony across the Kamba La Pass. He is dressed in a knee-length, striped robe, a hat and a scarf wound around his head. The animals have leather saddles which suggests the syce is in the service of the Mission."