13. permitting little if any light to pass through because of denseness of matter; "dense smoke" " heavy fog" "impenetrable gloom" 14. made of fabric having considerable thickness; "a heavy coat" 15. of a drinker or drinking; indulging intemperately; "does a lot of hard drinking" "a heavy drinker" 16. prodigious; "big spender" "big eater ...