What does Tellie mean?

"I can't find it, where's my tellie?" he shouted through the house.

Dutch student slang. This is a Dutch word. You will hear it a lot at Dutch universities, student associations and in student houses.

It is the short, casual version of telefoon. Confusing for British people, because for them a telly is a TV. In a Dutch student house, the tellie is never far away. Also read about DM, RN and vanaaf.