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

Fellow Bengals wide receiver Tee Higgins, who is dealing with groin and neck issues, was not participating but reportedly working out on the rehab field at Bengals practice. — David Furones, Sun Sentinel, 8 Oct. 2026

Tight ends Isaiah Likely (knee/groin) and Chris Manhertz (shoulder) both remained limited. — Pat Leonard, New York Daily News, 8 Oct. 2026

Cleveland Clinic says the most effective prevention is a consistent and thorough bathing routine with regular showers and antibacterial soap focused on areas where apocrine glands sit, like the groin and armpits. — Samantha Agate, Fort Worth Star-Telegram, 6 Oct. 2026

Cleveland Clinic recommends regular showers that focus on areas with apocrine glands, like the groin and armpits, plus an antibacterial soap to kill odor-causing bacteria. — Samantha Agate, Charlotte Observer, 6 Oct. 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