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

During this 15-game stretch, Powell was held out of seven straight games due to a right groin strain and also missed one game with left calf tightness. —Barry Jackson, Miami Herald, 30 Mar. 2026

And in 2025, Gano tweaked his groin while warming up before a 22-9 loss to the Kansas City Chiefs in Week 3, leaving him unavailable for the first half. —Peter Sblendorio, New York Daily News, 30 Mar. 2026

McBride injured his groin during his first game back in almost two months due to a sports hernia, and the Knicks fell 111-100 to the Thunder on the road. —Matthew Davis, MSNBC Newsweek, 30 Mar. 2026

For the Leafs, defenseman Jake McCabe had a point in each of his past three games while forward William Nylander paced them in scoring with 67 points despite missing 17 games of the campaign with a groin injury. —Andrew Knoll, Oc Register, 29 Mar. 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
• moyen
• quoin
• adjoin
• benzoin
• bitcoin
• conjoin

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