What is "bottle glass"

Bottle \Bot"tle\, n. [OE. bote, botelle, OF. botel, bouteille, F. bouteille, fr. LL. buticula, dim. of butis, buttis, butta, flask. Cf. Butt a cask.]

1. A hollow vessel, usually of glass or earthenware (but formerly of leather), with a narrow neck or mouth, for holding liquids.

2. The contents of a bottle; as much as a bottle contains; as, to drink a bottle of wine.

3. Fig.: Intoxicating liquor; as, to drown one's reason in the bottle.

   Note: Bottle is much used adjectively, or as the first part of a compound.

   Bottle ale, bottled ale. [Obs.]
   --Shak.

   Bottle brush, a cylindrical brush for cleansing the interior of bottles.

   Bottle fish (Zo["o]l.), a kind of deep-sea eel ( Saccopharynx ampullaceus), remarkable for its baglike gullet, which enables it to swallow fishes two or three times its won size.

   Bottle flower. (Bot.) Same as Bluebottle.

   Bottle glass, a coarse, green glass, used in the manufacture of bottles.
   --Ure.

   Bottle gourd (Bot.), the common gourd or calabash ( Lagenaria Vulgaris), whose shell is used for bottles, dippers, etc.

   Bottle grass (Bot.), a nutritious fodder grass ( Setaria glauca and Setaria viridis); -- called also foxtail, and green foxtail.

   Bottle tit (Zo["o]l.), the European long-tailed titmouse; -- so called from the shape of its nest.

   Bottle tree (Bot.), an Australian tree ( Sterculia rupestris), with a bottle-shaped, or greatly swollen, trunk.

   Feeding bottle, Nursing bottle, a bottle with a rubber nipple (generally with an intervening tube), used in feeding infants.