Definition of ulster
: a long loose overcoat of Irish origin made of heavy material (as frieze)
Origin of ulster
First Known Use: 1876
Definition of Ulster
1 region N Ireland (island) comprising Northern Ireland & N Ireland (republic); ancient kingdom, later a province comprising nine counties, three of which in 1921 joined Irish Free State (now Ireland) while the rest remained with United Kingdom
2 province N Ireland (republic) comprising counties Cavan, Donegal, & Monaghan area 3093 square miles (8042 square kilometers), pop 246,714
3 Northern Ireland —used unofficially
Learn More about ulster
Britannica.com: Encyclopedia article about "ulster"
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