Definitions

1. noun

The part of the body where the abdomen and thighs meet, including the pubic bone and surrounding muscles.

“The athlete pulled a muscle in her groin during the game.”

2. verb

To divide or separate something, typically by cutting or tearing it.

“The fabric was groined by a sharp knife.”

3. verb

To ornament a ceiling or vault with intersecting ribs or arches.

“The architect designed a groined ceiling for the cathedral.”