A typical automotive exhaust resonator is made of a hollow steel cylindrical tube and is attached to the muffler of an exhaust system. This type of resonator is designed similar to that of an acoustic resonator, which creates an âexhaust noteâ that gives the exhaust noise a less annoying and more pleasant tone.The sound can be enhanced by means of adjusting the exhaust note. typical automotive exhaust resonator is made of a hollow steel cylindrical tube and is attached to the muffler of an exhaust system. This type of resonator is designed similar to that of an acoustic resonator, which creates an âexhaust noteâ that gives the exhaust noise a less annoying and more pleasant tone.
buttonhole (plural buttonholes) 1  A hole through which a button is pushed to secure a garment or some part of one. ( 2 chiefly Britain) a flower worn in a buttonhole for decoration.
Noun. 1. pothole-a pit or hole produced by wear or weathering (especially in a road surface). chuckhole.hollow, hole-a depression hollowed out of solid matter.. A hole or pit, especially one in a road surface. Also called chuckhole. 2. A deep round hole worn in rock by loose stones whirling in strong rapids or waterfalls. 3. Western US A place filled with mud or quicksand that is a hazard to cattle.