yäˈge(ˌ)lō noun
or ja·giel·lo yägˈye-
( -s )
Usage: usually capitalized
Etymology: after Ladislas II (or V) Jagello (Polish Jagiełło ) died 1434 grand duke of Lithuania and king of Poland
: a member of a dynasty ruling in Lithuania, Poland, Hungary, and Bohemia during the 14th, 15th, and 16th centuries