- bulk1 [bʌlk] n[Date: 1400-1500; : Old Norse; Origin: bulki 'goods carried on a ship']1.) the bulk (of sth)the main or largest part of something▪ The bulk of consumers are based in towns.2.) [C usually singular]a big mass or shape of something▪ the great bulk of a building3.) [U]the size of something or someone▪ The dough will rise until it is double in bulk.4.) in bulkif you buy goods in bulk, you buy large amounts each time you buy thembulk 2bulk2 adj1.) bulk buying/orders etcthe buying etc of goods in large quantities at one time2.) [only before noun]bulk goods are sold or moved in large quantities▪ bulk flour for commercial bakeries3.) bulk mailif you send something bulk mail, you send large amounts of it for a smaller cost than normalbulk 3bulk3 v bulk largeto be the main or most important part of somethingbulk out [bulk sth<=>out] phr vto make something bigger or thicker by adding something else▪ We can bulk out the report with lots of diagrams.
Dictionary of contemporary English. 2013.