noun, feminine/ɡla.sjɛʁ/plural: glacières
icehouse (a deep cellar or outdoor building used for the storage of ice); ice cave; icebox; ice chest, coolbox; freezer (a very cold place)
“Une heure ou deux en glacière suffisaient souvent à rendre les gens plus loquaces.” — An hour or two in the cooler was often enough to make people more talkative.
From glace (“ice”) + -ière.