warder
1. ward.er \'wo.rd-*r\ n [ME, fr. AF wardere, fr. warde act of guarding, of Gmc origin; akin] to OHG warta act of watching 1: WATCHMAN, PORTER Brit 2a: WARDEN; esp : CARETAKER, CUSTODIAN 2b: a prison guard 2. warder n [ME, perh. fr. warden to ward] : a truncheon used by a king or commander in chief to signal orders