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matron of honour

British  

noun

  1. a married woman serving as chief attendant to a bride Compare bridesmaid maid of honour

  2. a married woman, usually a member of the nobility, who attends a queen or princess

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

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At their wedding in Acapulco in 1957, Mike's lifelong friend, the crooner Eddie Fisher, was best man, and Eddie's wife, Debbie Reynolds, was matron of honour.

From The Guardian • Mar. 23, 2011

Do you know who's going to be the matron of honour at my wedding three weeks from now?

From From Place to Place by Cobb, Irvin S. (Irvin Shrewsbury)