Prepended to a boy's name or surname as a (now somewhat formal) form of address. / A religious teacher, often as an honorific title. / The title of the head of certain colleges and schools.

(Wicca) One of the triune gods of the Horned God in Wicca alongside the Father and Sage and representing a boy or a young man / (banking) MasterCard

A surname.

A surname originating as an occupation for a stonemason. / A male given name transferred from the surname. / A town in Effingham County, Illinois. / An unincorporated community in Grant County, Kentucky.

A Freemason.

(Roman Catholic Church) The principal liturgical service of the Church, including a scripture service and a eucharistic service, which includes the consecration and oblation (offering) of the host and wine.

Abbreviation of Massachusetts. / Alternative form of Mas

A person with an extraordinary intellect or skill that is markedly superior to his or her peers. / A person responsible for the highest level of planning and execution of a major operation.

To act in the role of mastermind.

(especially Nazism) A race of people who are superior to others.