Remains carried back in Noah's Ark (3)
I believe the answer is:
ash
'remains' is the definition.
(remains of a fire)
'carried back in noah's ark' is the wordplay.
'carried back' says the letters should be written backwards.
'in' indicates a hidden word.
'hsa' can be found hidden inside 'noahs ark'.
'hsa' in reverse letter order is 'ASH'.
(Other definitions for ash that I've seen before include "Fire's remains" , "Tree with winged seeds" , "Tree - effect of burning" , "at village near Whitchurch in Shropshire" , "Remnant from fire" .)