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Idioms and Phrases with by the dozen

by the dozen

Also, by the hundred or thousand. According to a definite quantity, as in She's buying tapes by the dozen. This usage is generally employed for some kind of rate. A 1950 film about efficiency expert Frank Gilbreth and his family was entitled Cheaper by the Dozen. [c. 1300]

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.