noun

1. size, mass, or volume, esp. if great
2. the main mass or body of something; largest part or portion the bulk of one's fortune
3. soft, bulky matter of a kind that passes through the intestines without being absorbed and aids in elimination

Etymology: ME, heap, cargo < ON bulki, a heap, ship's cargo; prob. < IE base *bhel-: see ball

intransitive verb

1. to form into a mass
2. to increase in size, importance, etc.
3. to have size or importance to bulk large in the mind

transitive verb

1. to make (something) form into a mass
2. to make bulge; stuff
3. to give greater bulk, or size, to

adjective

1. total; aggregate
2. not put up in individual packages

noun

Etymology: ME balk < ON balkr, partition, wall; akin to balk