The phrase "glass cupboard" refers to a type of storage furniture that has transparent glass doors or sides, allowing you to see the items inside. Full definition
Customise the backs of shelves and glass cupboard doors with matching wallpaper for a co-ordinated look. (idealhome.co.uk)
(old fashioned style of stove, fridge and microwave, they cost thousands of dollars each) I really love the big farmhouse sinks with skirts and glass cupboards where I can display colorful fancy embossed plates with embossed flowers or animals. (theinspiredroom.net)
I realize you had mentioned you had not put items in the glass cupboards yet, but how about the other cabinets that are tall, do you find them functional storage? (zdesignathome.com)