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From Longman Dictionary of Contemporary Englishwarchalkingwar‧chalk‧ing /ˈwɔːˌtʃɔːkɪŋ $ ˈwɔːrˌtʃɒːk-/ noun [uncountable] technical  the activity of drawing symbols on the pavement to show the position of a wireless Internet network which hackers can use to make a free connection to the Internet
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