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
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Noun
Van de Ven is the only first-choice defender who is fit, and this was his first appearance since missing two games with a groin injury. Jay Harris, New York Times, 8 Feb. 2026 In a 76-73 loss at Minnesota on Wednesday night, Fears swung his leg backward into Langston Reynolds’ groin area after the whistle when Reynolds was called for a foul on Fears. Larry Lage, Chicago Tribune, 8 Feb. 2026 In recent weeks, Doncic has grappled with ankle and groin ailments as well; the wear-and-tear of the season emerging just before the All-Star break. Benjamin Royer, Oc Register, 7 Feb. 2026 Brasier, 38, was limited to just 26 innings last year by a pair of left groin strains while with the Chicago Cubs. Evan Grant, Dallas Morning News, 6 Feb. 2026 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 15 Feb. 2026.

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

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