The word magale is afar word which amharas who live near afar region use often... We turned that word and made it more beautiful by saying megalewa..
Yejju የእጁ means (his hand or the hand) ye=the ejju=his hand
The amharic of bete amhara is very expressive for example they say Antewa, Anchewa. Adding a (wa) to the end of words so when somebody says Gonderewa or Gojamewa this is the influence of Bete Amhara on us..