bulk bulk /ˈbʌlk/

noun

1. () The property resulting from being or relating to the greater in number of two parts; the main part  ( lion's share [Informal] , bulk , majority )
   the property resulting from being or relating to the greater in number of two parts; the main part
    The majority of his customers prefer it
   the majority of his customers prefer it
    The bulk of the work is finished
   the bulk of the work is finished
   
2. () The property of something that is great in magnitude  ( bulk , mass , volume )
   the property of something that is great in magnitude
    It is cheaper to buy it in bulk
   it is cheaper to buy it in bulk
    He received a mass of correspondence
   he received a mass of correspondence
    The volume of exports
   the volume of exports
   
   
3. The property possessed by a large mass  ( bulk )
   the property possessed by a large mass
   

verb

1. () Stick out or up  ( bulk )
   stick out or up
    The parcel bulked in the sack
   The parcel bulked in the sack
   
2. Cause to bulge or swell outwards  ( bulge , bulk )
   cause to bulge or swell outwards