skerry(redirected from Skerry guard)
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a rocky island separated by narrow straits and inlets from the intricately dissected coasts of seas and lakes in regions of ancient continental glaciation, such as the Kola Peninsula of the USSR, Finland, Sweden, Norway, and Canada. The islands are composed of crystalline rocks with traces of glacial activity, such as sheepback rocks, and various moraine formations, such as drumlins, eskers, and moraine hills. The islands have an area of several square kilometers and elevations of only a few meters. Many hundreds of skerries occur in certain regions of a sea or lake.