One who breaks windows and shew-glasses, to steal goods exposed for sale. Glaziers; eyes. cant.—Is your father a glazier; a question asked of a lad or young man, who stands between the speaker and the candle, or fire. If it is answered in the negative, the rejoinder is—I wish he was, that he might make a window through your body, to enable us to see the fire or light.
Definition taken from The 1811 Dictionary of the Vulgar Tongue, originally by Francis Grose.
See also the definition in Nathan Bailey's 1736 dictionary of canting and thieving slang.
Glaze * GlibNathan Bailey's 1736 Dictionary of canting and thieving slang
John S. Farmer's collection of canting songs and slang rhymes