Definition of Basel
1 former canton of northwestern Switzerland, now divided into two half cantons: Basel–Land\ˈbä-zəl-ˌlänt\ play (capital Liestal area 165 square miles, or 429 square kilometers; population 261,400) and Basel–Stadt\-ˌshtät\ play (capital Basel area 14 square miles, or 36 square kilometers; population 186,700)
2 city in northwestern Switzerland; capital of Basel-Stadt population 164,850
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