S: (n) bulk (bulk%1:07:00::), mass (mass%1:07:01::), volume (volume%1:07:03::) (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"
S: (n) Mass (mass%1:10:00::) (a musical setting for a Mass) "they played a Mass composed by Beethoven"
S: (n) Mass (mass%1:10:01::) (a sequence of prayers constituting the Christian Eucharistic rite) "the priest said Mass"
Verb
S: (v) mass (mass%2:38:00::) (join together into a mass or collect or form a mass) "Crowds were massing outside the palace"