[n] the property possessed by a large mass
[n] the property of something that is great in magnitude; "it is cheaper to buy it in bulk"; "he received a mass of correspondence"; "the volume of exports"
[n] 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 bulk of the work is finished"
[v] cause to bulge or swell outwards
[v] stick out or up; "The parcel bulked in the sack"