Lewis Short
ascensor | ads- (noun M) : (), , id.
* One that ascends (eccl. Lat.).
* In gen.: montis Dominici,Hier. in Rufin. 1: caeli,Vulg. Deut. 33, 26.
* Esp., one that mounts a horse, chariot, etc., a rider, charioteer: ut cadat ascensor ejus (equi) retro,Vulg. Gen. 49, 17: ascensor equi, ib. Amos, 2, 15: equum et ascensorem dejecit,ib. Exod. 15, 1; ib Job, 39, 18.—So absol.: ascensores (sc. equorum),Vulg. 4 Reg. 18, 23; so, asini ascensor,ib. Isa. 21, 7; cameli, ib. ib.' collidam in te currum et ascensorem ejus,ib. Jer. 21, 51. subvertam quadrigam et ascensorem ejus, ib. Agg. 2, 23.
Charlton T. Lewis, Charles Short, A Latin Dictionary