Antarctic Circle
Speech parts
1. Antarctic Circle - Noun
2. Antarctic Circle - Proper noun
Meaning
a line of latitude north of the south pole
Source: WordNetSynonyms
Examples
On December 21, people south of the Antarctic Circle see daylight for 24 hours as they circle around the South Pole as Earth rotates.
Voyagers round the Horn frequently met with contrary winds and were driven southward into snowy skies and ice-encumbered seas; but so far as can be ascertained none of them before 1770 reached the Antarctic Circle, or knew it, if they did.
On the other hand, places on the Antarctic Circle (latitude 66.56° south) will see the Sun just on the horizon during midday, and all places south of it will not see the Sun above horizon at any time of the day.
The south polar latitudes below the Antarctic Circle are in daylight whilst the north polar latitudes above the Arctic Circle are in night.