hack (3)EnglishOxford New American Dictionaryhack3 /hak, hæk / ▸ noun 1 Falconry a board on which a hawk's meat is laid. 2 a wooden frame for drying bricks, cheeses, etc. ▪ a pile of bricks stacked up to dry before firing. – PHRASES at hack (of a young hawk) given partial liberty but not yet allowed to hunt for itself.– ORIGIN late Middle English (denoting the lower half of a divided door): variant of hatch1.