| 1. | magnitude in three dimensions: a ship of great bulk. |
| 2. | the greater part; main mass or body: The bulk of the debt was paid. |
| 3. | goods or cargo not in packages or boxes, usually transported in large volume, as grain, coal, or petroleum. |
| 4. | fiber (def. 9). |
| 5. | (of paper, cardboard, yarn, etc.) thickness, esp. in relation to weight. |
| 6. | the body of a living creature. |
| 7. | bulk mail. |
| 8. | being or traded in bulk: bulk grain. |
| 9. | to increase in size; expand; swell. |
| 10. | to be of or give the appearance of great weight, size, or importance: The problem bulks large in his mind. |
| 11. | (of paper, cardboard, yarn, etc.) to be of or to acquire a specific thickness, esp. in relation to weight. |
| 12. | to gather, form, or mix into a cohesive or uniform mass. |
| 13. | to cause to swell, grow, or increase in weight or thickness. |
| 14. | to gather, bring together, or mix. |
| 15. | bulk up, to increase the bulk of, esp. by increasing the thickness of: Adding four chapters will bulk up the book. |
| 16. | in bulk,
|

of buck. In South Midland and Southern U.S. the [oo] of book and bull commonly occurs among all speakers. Standard British speech has only [uh]. Both types exist in British regional speech, and both were brought to the colonies, where each came to predominate in a different area and was carried west by migration.
| 1. | a fine, threadlike piece, as of cotton, jute, or asbestos. |
| 2. | a slender filament: a fiber of platinum. |
| 3. | filaments collectively. |
| 4. | matter or material composed of filaments: a plastic fiber. |
| 5. | something resembling a filament. |
| 6. | an essential character, quality, or strength: people of strong moral fiber. |
| 7. | Botany.
|
| 8. | Anatomy, Zoology. a slender, threadlike element or cell, as of nerve, muscle, or connective tissue. |
| 9. | Nutrition. Also called bulk, dietary fiber, roughage.
|
| 10. | Chemistry. vulcanized fiber. |
| 11. | Optics. optical fiber. |

bulk (bŭlk) n.
v. intr.
Phrasal Verb(s): bulk upTo gain weight by gaining muscle: dietary supplements that helped the weightlifters bulk up. Idiom(s): in bulk
[Middle English, perhaps partly alteration of bouk, belly, trunk of the body (from Old English būc) and partly from Old Norse bulki, cargo, heap; see bhel-2 in Indo-European roots.] |
fiber fi·ber (fī'bər)
n.
A slender thread or filament.
Extracellular filamentous structures such as collagenic or elastic connective tissue fibers.
The nerve cell axon with its glial envelope.
An elongated threadlike cell, such as a muscle cell or one of the epithelial cells of the lens of the eye.
Coarse, indigestible plant matter, consisting primarily of polysaccharides such as cellulose, that when eaten stimulates intestinal peristalsis. Also called roughage.