Grimisay, an island of North Uist parish, Outer Hebrides, Inverness-shire. Lying in the middle of the eastern part of the Sound between North Uist island and Benbecula, it has an utmost length and breadth of 3 and 1½ miles, and was formerly considered barren and of trivial value, but has been turned to good habitable account. There are a post office under Lochmaddy and a public school (1879), with accommodation for 76 children. Pop. (1841) 269, (1861) 305, (1871) 283, (1881) 292.

(F.H. Groome, Ordnance Gazetteer of Scotland (1882-4); © 2004 Gazetteer for Scotland)