two islands of this name in the sea lying between Britain and Ireland. The one described by Cæsar, as situated in the mid-passage between both islands, and stretching out in length from south to north. Called Monaëda (Ptolemy); Monapia, or Monabia (Pliny). Supposed to be the Isle of Man.—Another Mona, (Tacitus); an island more to the south, and of greater breadth; situated on the coast of the Ordovices, from which it is separated by a narrow strait. The ancient seat of the Druids. Now called Anglesey, the island of the Angles or English.

an island of the Baltic Sea, south-west of the island of Zealand, subject to Denmark. E. Long. 12° 30'. N. Lat. 55° 20'.