Noun

• S: (n) mass (the property of a body that causes it to have weight in a gravitational field)
• S: (n) batch, deal, flock, good deal, great deal, hatful, heap, lot, mass, mess, mickle, mint, mountain, muckle, passel, peck, pile, plenty, pot, quite a little, raft, sight, slew, spate, stack, tidy sum, wad ((often followed by `of') a large number or amount or extent) "a batch of letters"; "a deal of trouble"; "a lot of money"; "he made a mint on the stock market"; "see the rest of the winners in our huge passel of photos"; "it must have cost plenty"; "a slew of journalists"; "a wad of money"
• S: (n) mass (an ill-structured collection of similar things (objects or people))
• S: (n) Mass ((Roman Catholic Church and Protestant Churches) the celebration of the Eucharist)
• S: (n) mass (a body of matter without definite shape) "a huge ice mass"
• S: (n) multitude, masses, mass, hoi polloi, people, the great unwashed (the common people generally) "separate the warriors from the mass"; "power to the people"
• S: (n) bulk, mass, volume (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 (a musical setting for a Mass) "they played a Mass composed by Beethoven"
• S: (n) Mass (a sequence of prayers constituting the Christian Eucharistic rite) "the priest said Mass"
• S: (n) multitude, masses, mass, hoi polloi, people, the great unwashed (the common people generally) "separate the warriors from the mass"; "power to the people"

Verb

• S: (v) mass (join together into a mass or collect or form a mass) "Crowds were massing outside the palace"