warchalking(redirected from Warchalk)
Also found in: Encyclopedia.
(Computer Science) the practice of marking chalk symbols on walls and pavements at places where local wireless internet connections may be obtained for free via a computer, usually without permission
[C21: from w(ireless) a(cess) r(evolution) + gerund of chalk]
n (Comput, Telec) → Warchalking nt