Like some whiskey barrels (5)
I believe the answer is:
oaken
'like some whiskey barrels' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for oaken that I've seen before include "(Old adjective for something) made of a deciduous tree's wood" , "Made of particular wood" , "like some old cabinets" , "Made of wood from a deciduous tree" , "Timber" .)