Wordnet polsko-angielski 
                         (a set of graduated rods formerly used to do multiplication and division by a method invented by John Napier) 
Napier's bones, Napier's rods 
synonim: kostki Napiera
 (a set of graduated rods formerly used to do multiplication and division by a method invented by John Napier) 
Napier's bones, Napier's rods 
synonim: kostki Napiera