groin

1 of 2

noun

ˈgrȯin 

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

• 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

Noun

Fangio has also been complimentary of Chance Campbell, who returned to practice this week after dealing with a groin injury. — Brooks Kubena, New York Times, 21 Aug. 2026

The new groin injury that is sidelining Miami Dolphins quarterback Quinn Ewers, along with another previous undisclosed injury, could have an impact on how he’s evaluated by the new regime of general manager Jon-Eric Sullivan and coach Jeff Hafley. — David Furones, Sun Sentinel, 20 Aug. 2026

Quarterback Quinn Ewers missed his second straight practice because of a groin sprain and isn’t expected to participate in Saturday’s preseason game. — Omar Kelly, Miami Herald, 20 Aug. 2026

During Monday’s practice, Jets running back Breece Hall strained his groin. — Antwan Staley, New York Daily News, 18 Aug. 2026

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

Rhymes for groin

• coin
• coyne
• join
• koine
• loin
• moine
• quoin
• adjoin
• benzoin
• bitcoin
• conjoin
• enjoin

Kids Definition

groin

1 of 2 noun

ˈgrȯin 

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

ˈgrȯin 

: the fold or depression marking the juncture of the lower abdomen and the inner part of the thigh

also : the region of this line