1ac the most notable leader of the slaves in the Third Servile War, a major uprising against the Roman Republic.(9) 10ac A shallow box with a heating element and cover used for germinating seeds or rooting cuttings.(10) 11ac the derived SI unit of radioactivity,named after a French physicist.(9) 15ac Slang termmeaning to improvise aimlessly on a musical instrument.(6) 21ac North American ericaceous shrub with small edible fruits ,sometimes called Huckleberry.(9)