From Longman Dictionary of Contemporary Englishgarretgar‧ret /ˈɡærɪt/ noun [countable] DHHa small uncomfortable room at the top of a house, just under the roof → attic
Examples from the Corpus
garret• At least it wasn't a garret, he would have said, which was the only other thing they'd been offered.• People used to go to a garret and paint.• Then she turned and flew on winged feet up the narrow stair to take refuge in her garret room.• When some mice found the garret, the fir tree was happy for the company.• Can they really have discovered the secret of the garret room already?• I can't get back to the garret until tomorrow.• It is because this garret is at the very heart of Government.• You could shut yourself away in this garret all day and never come down.Origin garret (1400-1500) Old French garite “tower for keeping watch from”, from garir “to protect” 