Толковый словарь английского языка Oxford English Reference - gravel

n. & v. --n. 1 a a mixture of coarse sand and small water-worn or pounded stones, used for paths and roads and as an aggregate. b Geol. a stratum of this. 2 Med. aggregations of crystals formed in the urinary tract. --v.tr. (gravelled, gravelling; US graveled, graveling) 1 lay or strew with gravel. 2 perplex, puzzle, nonplus (from an obs. sense 'run (a ship) aground'). Phrases and idioms gravel-blind literary almost completely blind ('more than sand-blind', in Shakesp. Merchant of Venice II. ii. 33). Etymology: ME f. OF gravel(e) dimin. of grave (as GRAVE(4))