Definition of "groundhog" []

• See woodchuck. See Regional Note at woodchuck. (noun)

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.

• "Later this week, a certain groundhog will pop his head out of a burrow in Punxsutawney, Pa."
• "The Kepler team has discovered these planets using something my friend Elizabeth describes as the groundhog method - you sit there staring at stars using highly precise instruments, and if you see a shadow, you get another planet."
• "I see your woodchuck and raise you a groundhog, a tougher tonguetwister developed by my sister when she discovered that a woodchuck and a groundhog were the same thing."