glasspack
nounEtymology From glass + pack.
1
Automotive, Transport, Vehicles A kind of automobile muffler in which the exhaust gas passes straight through the center of the muffler. It consists of a smaller tube centered inside a larger tube that is enlarged or swollen in the middle, the gap between tubes being filled with fiberglass.
- That's an illegal muffler, Alan thought. A glasspack. I could cite him for that.1991, Stephen King, Needful Things: