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

Last season, Cook, an undrafted rookie free agent, started the Jets’ final four games after Justin Fields was benched and backup Tyrod Taylor suffered a groin injury. — Antwan Staley, New York Daily News, 1 Aug. 2026

Central midfield also looks light after Idrissa Gueye’s exit and James Garner’s groin surgery. — Luke Bosher, New York Times, 31 July 2026

Tap around the major lymph-node areas Lymphatic tapping videos tend to focus on the collarbones, sides of the neck, underarms, abdomen, groin, and backs of the knees—areas where clusters of lymph nodes are found. — Chloe Burcham, Vogue, 30 July 2026

The Indiana Fever guard missed last year’s event in Indianapolis because of a groin injury. — Jay Cohen, Los Angeles Times, 26 July 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