What does the word insular mean?

Usage examples for insular

  1. Then, when we had rubbed off our insular corners against the Great French Politeness, and perfected our grasp of the language in talk with the Agenois villagers, we proposed to drop gently into Pau, armed at all points, and scarcely distinguishable from Frenchmen. – When Love Calls by Stanley J. Weyman
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