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leading light
English
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Noun
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leading
light
(
plural
leading lights
)
(
idiomatic
)
An
acclaimed
expert, one of the
foremost
experts, a
luminary
.
Stephen Hawking is a
leading light
in physics, people say he's the greatest physicist since Einstein.
(
nautical
,
navigation
)
A
light
that helps to guide vessels into a
port
.