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
What wasn’t in the plan was that Durkin, who’s also a baseball player for the Eagles, would suffer a minor groin injury running the bases during Monday’s 7-6 win over Homewood-Flossmoor. Jeff Vorva, Chicago Tribune, 14 May 2026 The report said some female bodies brought to morgues showed broken pelvises or legs, bloodied underwear and additional trauma to the abdomen or groin. Amelie Botbol, FOXNews.com, 14 May 2026 Humans should check any crevices where the parasites can latch on, including the back of the knees, waistband, groin area, armpits or scalp. Lauren Penington, Denver Post, 14 May 2026 Paolo Banchero missed 10 games with a left groin strain. Jason Beede, The Orlando Sentinel, 9 May 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 16 May. 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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