English

Definition of warchalking noun from the Oxford Advanced Learner's Dictionary

 

warchalking

 noun
noun
BrE BrE//ˈwɔːtʃɔːkɪŋ//
 
; NAmE NAmE//ˈwɔːrtʃɔːkɪŋ//
 
[uncountable] (informal) Using the Internet
 
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the action of drawing a symbol on the wall of a building to show that you can get a free Internet connection near that place See related entries: Using the Internet Word Origin early 21st cent.: from the use of chalk marks by tramps to indicate which homes were friendly and which to avoid.
See the Oxford Advanced American Dictionary entry: warchalking