mass (Noun) — The property of a body that causes it to have weight in a gravitational field.
mass (Noun) — (often followed by 'of') a large number, amount or extent. ex. "a mass of letters"
mass (Noun) — An ill-structured collection of similar things (objects or people).
mass (Noun) — A body of matter without definite shape. ex. "a huge ice mass"
mass (Noun) — The common people generally. ex. "separate the warriors from the mass"
mass (Noun) — The property of something that is great in magnitude. ex. "he received a mass of correspondence"
mass (Noun) — (Roman Catholic Church and Protestant Churches) the celebration of the Eucharist.
mass (Noun) — A musical setting for a Mass. ex. "they played a Mass composed by Beethoven"
mass (Noun) — A sequence of prayers constituting the Christian Eucharistic rite. ex. "the priest said Mass"
mass (Adjective) — Formed of separate units gathered into a mass or whole. ex. "mass expenses include expenses of all divisions combined for the entire year"
mass (Verb) — Join together into a mass, collect or form a mass. ex. "Crowds were massing outside the palace"