It's light to carry (5)
(Other definitions for torch that I've seen before include "Set fire to (something)" , "Hand-held lamp or burning stick" , "Link" , "Flashlight" , "may get one glowing" .)
(Other definitions for lantern that I've seen before include "Light in a transparent protective case" , "It illuminates" , "outside D [DECORATION]" , "Top of lighthouse" , "Enclosed light" .)