(historical) Northern Ireland's police force from 1922 to 2001.

Any male coming from or living in the northern Irish province of Ulster.

A small, lightweight ulster.

plural of ulsterette

plural of Ulsterman

plural of Ulsterwoman

A woman from Ulster, Ireland.

The devolution of security and policing to Northern Irish forces such as the Royal Ulster Constabulary.

plural of Ulsterian

Of or relating to Ulster in Ireland.