Glas or Glass: How To spell?
The word Glas is misspelled against Glass, a verb meaning "A drinking vessel; a tumbler; a goblet; hence, the contents of such a vessel; especially; spirituous liquors; as, he took a glass at dinner."
Glass has double 'ss' in the end mispronounced as 's'Remember double 'SS' appears in the end of this word which should not be misspelled with single 'S'
Wrong Spelling:  gla-s  Correct Spelling:  gla-ss 
Browse incorrect spellings of Glass to spell it good.