Illustration of groin
- groin 2a
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
Cite this Entry
“Groin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/groin. Accessed 27 Oct. 2026.
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