Someone who acts as a host at a formal event. / Someone who conducts a programme of varied entertainment, for example by introducing performers to the audience. / (rap music) A rapper.

A degree that usually requires 2-3 years beyond a Bachelor of Science and emphasizes science and scientific applications. The degree is less advanced than a Doctorate degree.

A key designed to open a set of several locks; a passkey. / (figuratively) Any tool or technique that can solve many types of difficulty.

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

(humorous) Respectful term of address for an expert in a particular field.

A room in a house, in which the head of the household sleeps, typically larger and better furnished than other bedrooms.

(film) A master shot in which the camera moves relative to the performance.

A postgraduate degree usually in a non-science subject. / A person holding such a degree.

(data management) Reference data.

(sociology) A social status that is the primary socially identifying characteristic of an individual, such as being the queen.