hiccup hicÂ·cup or hicÂ·cough (hÄ­k'Ép) n. A spasm of the diaphragm causing sudden inhalation interrupted by spasmodic closure of the glottis, producing a characteristic noise.
Ancient Convergent Plate Boundary-Appalachian Mountain Range. The range is mostly located in the United States but extends into southeastern Canada, forming a zone from 100 to 300 mi (160 to 480 km) wide, running from the island of Newfoundland 1,500 mi (2,400 km) southwestward to Central Alabama in the United States.
In the southern section, the Appalachian Plateau and Valley and Ridge provinces make up the western border of the system and are composed of sedimentary rocks like sandstone, limestone and shale. To the east lie the Blue Ridge Mountains and the Piedmont, composed primarily of metamorphic and igneous rocks.