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leading light
leading light
A person who is well-respected and viewed as important to a group. As a leading light of the human rights organization, he helped improve working conditions for millions of people around the world.
leading light
An important or influential individual, as in Jim was a leading light in his community. This expression, alluding to moral guidance, dates from about 1870, but terms such as a shining light have been used for an outstanding person since the first half of the 1500s.