凸(とつ)るto charge, to rush, to assault, to attack

う-verb (る), Intransitive verb

1. 1.

   to charge, to rush, to assault, to attack

   Internet slang,

   See Also:

   • 突撃

2. 2.

   to flood a company, organization etc. with phone complaints (usu. loosely organized on anonymous online message boards)

   Internet slang,

   See Also:

   • 電凸

3. 3.

   to message (someone), to contact

   Internet slang