Merriam-Webster Collegiate Dictionary - glass

 I. biographical name Carter 1858-1946 American statesman  II. biographical name Philip 1937- American composer GLASS  I. noun  Usage: often attributive  Etymology: Middle English glas, from Old English gl?s; akin to Old English geolu yellow — more at yellow  Date: before 12th century  1. any of various amorphous materials formed from a melt by cooling to rigidity without crystallization: as  a. a usually transparent or translucent material consisting typically of a mixture of silicates  b. a material (as obsidian) produced by fast cooling of magma  2.  a. something made of ~: as  (1) tumbler; also ~ware  (2) mirror  (3) barometer  (4) hour~  (5) backboard 1  b.  (1) an optical instrument or device that has one or more lenses and is designed to aid in the viewing of objects not readily seen  (2) field ~es, binoculars — usually used in plural  c. plural a device used to correct defects of vision or to protect the eyes that consists typically of a pair of ~ or plastic lenses and the frame by which they are held in place — called also eye~es, spectacles  3. the quantity held by a ~ container  4. fiber~  • ~ful noun  • ~less adjective  II. verb  Date: 14th century  transitive verb  1.  a. to provide with ~ ; glaze 1  b. to enclose, case, or wall with ~ the sunroom was ~ed in  2. to make ~y  3.  a. reflect  b. to see mirrored  4. to look at through an optical instrument (as binoculars)  intransitive verb glaze I,1