Warder

n.	1.	One who wards or keeps; a keeper; a guard.
	2.	A truncheon or staff carried by a king or a commander in chief, and used in signaling his will. When, lo! the king suddenly changed his mind, Casts down his warder to arrest them there. - Daniel. Wafting his warder thrice about his head, He cast it up with his auspicious hand, Which was the signal, through the English spread, This they should charge. - Drayton.

Noun

1.

warder - the chief official in charge of a prison Synonyms: warden

advance guard, air warden, armed guard, attendant, bank guard, bull, caretaker, castellan, coast guard, commandant, conservator, cordon, cordon sanitaire, curator, custodian, forest ranger, game warden, gamekeeper, gaoler, garrison, goalie, goalkeeper, goaltender, governor, guard, guarder, guardian, guardian angel, guardsman, inlying picket, jailer, janitor, keeper, lifeguard, lifesaver, next friend, outguard, outpost, picket, principal keeper, prison guard, prochein ami, ranger, rear guard, screw, security guard, shepherd, steward, train guard, turnkey, van, vanguard, warden