Roscommon: Meaning and Definition of

Ros•com•mon

Pronunciation: (ros-kom'un), [key]
— n.
  1. a county in Connacht, in the N Republic of Ireland. 54,499; 950 sq. mi. (2460 sq. km). Co. seat: Roscommon.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.