Definition of 閣下 (かっか)
かっか
                        閣下
かっか
kakka
Common word
noun, noun (suffix)
•
        
your Excellency, his Excellency, her Excellency(honorific language)
Related Kanji
| 閣 | tower, tall building, palace | 
| 下 | below, down, descend, give, low, inferior |