A door entirely or mainly made of glass, a glass door.

(figuratively, transitive with à) to raise one's glass to (someone), to salute (someone)

(figuratively) tempest in a teapot, storm in a teacup, much ado about nothing

(pathology) brittle bone disease, osteogenesis imperfecta (hereditary disease characterized by brittle bones that easily fracture)

(figuratively, informal) to make a mountain out of a molehill (to get all worked up over the slightest difficulties)

(informal) to be slightly inebriated (tipsy), or rather strongly so (drunk); to have had one too many, to have had a drop too much

(figuratively) to see the glass half-empty (to adopt a negative, pessimistic attitude towards a situation, or towards life in general)

(figuratively) to see the glass half-full (to adopt a positive, optimistic attitude towards a situation, or towards life in general)

(informal) to knock back a drink, to neck a glass of some drink

third-person plural present indicative/subjunctive of verrer