conjunction
Colloquial contraction of という or っていう, used in casual conversation to indicate what something is called or what someone said.
See also: と言う (という) · って言う (っていう)
それ、なんっちゅう名前だっけ?
What was that called again?
田中っちゅう人から電話があったよ。
There was a call from someone called Tanaka.