noun
plural reigns
[count] the period of time during which a king, queen, emperor, etc., is ruler of a country
the period of time during which someone is in charge of a group or organization
the period of time during which someone or something is the best or the most important, powerful, etc.
verb
reigns; reigned; reigning
[no obj]
to rule as a king, queen, emperor, etc.
to be the best or the most powerful or important person or thing
used to say that a quality exists to such a degree in a place or situation that it affects everything about that place or situation