Б13

БЕССТРУННАЯ БАЛАЛАЙКА coll, disapprovNPusu. singoften subj-compl with copula, nom or instrum (subj: human, obj-compl with называть etcobj: human), or vocative) a person who talks a lot but says nothing of substance
windbag
gasbagchatterbox.

Большой русско-английский фразеологический словарь 

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