gaoler

from WordNet (r) 3.0 (2006)

gaoler
    n 1: someone who guards prisoners [syn: {prison guard},
         {jailer}, {jailor}, {gaoler}, {screw}, {turnkey}]

from The Collaborative International Dictionary of English v.0.48

Gaoler \Gaol"er\ (j[=a]l"[~e]r), n.
   The keeper of a jail. Same as {Jailer}.
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Jailer \Jail"er\, n. [OE. jailer, gailer, OF. geolier, F.
   ge[^o]lier. See {Jail}.]
   The keeper of a jail or prison. [Written also {jailor},
   {gaoler}.]

from Bouvier's Law Dictionary, Revised 6th Ed (1856)

GAOLER. The keeper of a gaol or prison, one who has the legal custody of the 
place where prisoners are kept. 
     2. It is his duty to keep the prisoners in safe custody, and for this, 
purpose he may use all necessary force. 1 Hale, P. C. 601. But any 
oppression of a prisoner under a pretended necessity will be punished; for 
the prisoner, whether he be a debtor or a criminal, is entitled to the 
protection of the laws from oppression.

[email protected]