mass

(physical) Matter, material.

A large quantity; a sum.

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

To have a certain mass.

"I mass 70 kilograms."

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

"There is evidence of mass extinctions in the distant past."

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

"Mass unemployment resulted from the financial collapse."

The Eucharist, now especially in Roman Catholicism.

Celebration of the Eucharist.

(usually as the Mass) The sacrament of the Eucharist.

A musical setting of parts of the mass.

To celebrate mass.