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groin

1 of 2

noun

1
: the fold or depression marking the juncture of the lower abdomen and the inner part of the thigh
also : the region of this line
2
a
: the projecting curved line along which two intersecting vaults meet
b
: a rib that covers this edge
3
: a rigid structure built out from a shore to protect the shore from erosion, to trap sand, or to direct a current for scouring a channel

Illustration of groin

Illustration of groin
  • groin 2a

groin

2 of 2

verb

groined; groining; groins

transitive verb

: to build or equip with groins

Examples of groin in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Noun
The Cleveland Browns did not take kindly to 49ers wide receiver Jauan Jennings, who was punched in the groin last game to earn Carolina’s Tre’Von Moehrig a one-game suspension. Cam Inman, Mercury News, 1 Dec. 2025 Jaquez, who has established himself as one of the early favorites for the NBA’s Sixth Man of the Year award, didn’t play Saturday because of a strained right groin. Anthony Chiang, Miami Herald, 30 Nov. 2025 The Milwaukee Bucks’ Giannis Antetokounmpo rampaged through the first few weeks before injuring his groin. Louisa Thomas, New Yorker, 30 Nov. 2025 The 8-12 Bucks have scuffled this season, but two-time NBA MVP Giannis Antetokounmpo returned to their lineup on Friday after sitting out four games with a groin injury. Zack Cox, Boston Herald, 30 Nov. 2025 See All Example Sentences for groin

Word History

Etymology

Noun

alteration of Middle English grynde, from Old English, abyss; akin to Old English grund ground

First Known Use

Noun

circa 1532, in the meaning defined at sense 1

Verb

circa 1816, in the meaning defined above

Time Traveler
The first known use of groin was circa 1532

Browse Nearby Words

Cite this Entry

“Groin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/groin. Accessed 4 Dec. 2025.

Kids Definition

groin

1 of 2 noun
1
: the junction of the lower abdomen and the inner part of the thigh or the part of the body around this junction
2
: the curved line or rib on a ceiling along which two vaults meet

groin

2 of 2 verb
: to build or equip with groins

Medical Definition

groin

noun
: the fold or depression marking the juncture of the lower abdomen and the inner part of the thigh
also : the region of this line

More from Merriam-Webster on groin

Last Updated: - Updated example sentences
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