Definition of "monestrous" []

• Having one estrous cycle per year. Used of certain mammals. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The monestrous Robosaurus, which stands four stories high, has steel jaws and a fire breathing nose, hasn't been down under for 10 years."
• "Jerry ended up with a rather strange look by the end of the movie that was much more monestrous looking."