(slang, humorous) The mass or volume of a beard.
{{quote-book|en|year=1866|author=William Arnot|chapter=Ourselves, and How to Make the Most of Them|title=Six Lectures Delivered In Exeter Hall|pageurl=https://books.google.com/books?id=fjNoAAAAcAAJ&pg=PA69&dq=%22beardage%22|page=69
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