Portable light (5)
'portable light' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for lantern that I've seen before include "Light held by 26/27 Across" , "Transparent case for candle" , "Light in a transparent protective case" , "Enclosed lamp" , "Cased lamp" .)
'portable light' is the definition.
(a torch is a portable light source)
This is the entire clue.
(Other definitions for torch that I've seen before include "Set fire to; electric lamp" , "Portable light; burn" , "Link" , "A large candle" , "Hand-held lamp or burning stick" .)