noun

• An anonymous phone call, or one that is made to threaten, annoy, or harass its recipient.

  ‘This is why there are blank calls.’

  More example sentences

  • ‘And why haven't you been getting a blank call?’
  • ‘This kind of depravity is also found among people who make blank calls, or whistle at pretty women, or throw garbage on cricket fields, or scribble graffiti on historic monuments.’
  • ‘They made blank calls to our rooms in the wee hours of the morning to check that we were still in our hotel rooms and not out spying.’