Mass

1. (physical) Matter, material.
2. A large quantity; a sum.

1. To form or collect into a mass; to form into a collective body; to bring together into masses; to assemble.
2. To have a certain mass.

   I mass 70 kilograms.

1. Involving a mass of things; concerning a large quantity or number.

   There is evidence of mass extinctions in the distant past.

2. Involving a mass of people; of, for, or by the masses.

   Mass unemployment resulted from the financial collapse.

1. The Eucharist, now especially in Roman Catholicism.
2. Celebration of the Eucharist.
3. (usually as the Mass) The sacrament of the Eucharist.
4. A musical setting of parts of the mass.

verb

To celebrate mass.