bulk noun

1 large size

ADJ. considerable, formidable, huge, massive, sheer I was amazed by the sheer bulk of the creature. | dark, looming, solid

VERB + BULK ease, heave, shift (used about people) He heaved his considerable bulk into the chair.

2 large amount

ADJ. great, large, overwhelming, vast

BULK + NOUN buying, order, purchasing

PREP. in ~ Sugar is imported in bulk from the mainland.

PHRASES the bulk of (= most of) The great bulk of the work has now been done. | buy in bulk It's usually cheaper to buy in bulk.