- 1[singular] the bulk (of something) the main part of something; most of something The bulk of the population lives in cities.
- 2[uncountable] the (large) size or quantity of something Despite its bulk and weight, the car is extremely fast. a bulk order (= one for a large number of similar items) bulk buying (= buying in large amounts, often at a reduced price) It's cheaper to buy in bulk.
- 3[singular] the weight or shape of someone or something large She heaved her bulk out of the chair.
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