1glass 
/ˈglæs, Brit ˈglɑ:s/ noun
plural glass·es /ˈglæs, Brit ˈglɑ:s/ noun 1 [noncount] : a hard usually transparent material that is used for making windows and other products
▪ He broke the glass. — often used before another noun ▪ a glass bowl/bottle — see also plate glass, stained glass 2 [count] a : a drinking container made out of glass
▪ The waiter filled our glasses with water. ▪ an elegant wine glass ◊The expression raise a glass or raise your glasses is used to tell people to hold up their glasses and drink a toast as a way to wish someone happiness, success, etc.
b : the amount held by a glass container
▪ She drank two glasses of water. 3 glasses [plural] : a pair of glass or plastic lenses set into a frame and worn over the eyes to help a person see
▪ I have to wear glasses [=spectacles, (US) eyeglasses] for reading. = I have to wear reading glasses. ▪ She was wearing dark glasses with thick black frames. ▪ horn-rimmed glasses — see also field glasses, magnifying glass, opera glasses
▪ He broke the glass. — often used before another noun ▪ a glass bowl/bottle — see also plate glass, stained glass
▪ The waiter filled our glasses with water. ▪ an elegant wine glass ◊The expression raise a glass or raise your glasses is used to tell people to hold up their glasses and drink a toast as a way to wish someone happiness, success, etc.
b : the amount held by a glass container
▪ She drank two glasses of water.
▪ I have to wear glasses [=spectacles, (US) eyeglasses] for reading. = I have to wear reading glasses. ▪ She was wearing dark glasses with thick black frames. ▪ horn-rimmed glasses — see also field glasses, magnifying glass, opera glasses
people who live in glass houses shouldn't throw stones
— used to say that people who have faults should not criticize other people for having the same faults
under glass
: in a glass container
▪ Most of the articles in the museum are preserved under glass.
▪ Most of the articles in the museum are preserved under glass.
— see also hourglass, looking glass
— glass·ful /ˈglæsˌfʊ, Brit ˈglɑsˌfʊ/ noun, plural glass·fuls [count]
▪ had another glassful [=more commonly, glass] of beer
/ˈglæsˌfʊ, Brit ˈglɑsˌfʊ/ noun, plural glass·fuls [count] ▪ had another glassful [=more commonly, glass] of beer
