Bulk  —n. 1 a size; magnitude (esp. Large). B large mass, body, etc. C large quantity. 2 (treated as pl. & usu. Prec. By the) greater part or number (the bulk of the applicants are women). 3 roughage. —v. 1 seem (in size or importance) (bulks large). 2 make (a book etc.) Thicker etc.  in bulk in large quantities. [old norse]