Wordnet polsko-angielski 
                         (a colorless oily compound extracted from coal tar and used in manufacturing synthetic resins) 
benzofuran, coumarone, cumarone 
synonim: benzofuran
 (a colorless oily compound extracted from coal tar and used in manufacturing synthetic resins) 
benzofuran, coumarone, cumarone 
synonim: benzofuran