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English definition of “weigh in”

weigh in

verb uk phrasal verb with weigh   /weɪ/ us  

(SPORT)

to be officially weighed before competing in a sport, especially boxing or horse racing: Tyson weighed in at 245 lb for the fight.Weighing and measuringCompeting in sportCompeting and contending (non-sporting)

(DISCUSSION)

informal to become involved in an argument or discussion in a forceful way: Several leading architects weighed in with criticisms regarding the design of the new museum.Debate and discussion
(Definition of weigh in from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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