slave
n.β Β«BELAY DOG or SLAVE: An affectionate term for non-climbers willing to handle the safety rope all day.Β» ββItβs βmutantsβ against the βrockβ at new indoor climbing center” by Rick Ansorge Colorado Springs Gazette Telegraph (Colo.) Feb. 15, 1992. (source: Double-Tongued Dictionary)