When your legs are streched, for example when you stand or lie on your back, there is a narrow area, about a finger wide, between where your legs join the body and your genitals on the underside of your torso. What is this part of the body called?

Groin, as the OED defines it, seems to refer to "the depression between the abdomen and the upper thigh", that is, an area on the front of the body and not between the legs, where the area lies that I'm after.

Here is an image in which the area is marked in green: https://i.stack.imgur.com/OFaO3.jpg (NSFW, genitals covered). Please note how the 'string' of the taut adductor muscles separates the groin on the front side of the trunk from the area in question on the trunk's underside. The image shows a female body and the perineum is invisible below the genitalia in the shadow between the buttocks.

Image source: https://commons.wikimedia.org/wiki/File:Courageous_Cunt_06.jpg (NSFW, explicit)

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    the supero-medial compartment of the thigh – lbf Aug 18 '19 at 15:19

The area between the torso and the thigh, where the leg “connects” to the body, is called the inguinal canal or just inguinal. “I still have pain in the inguinal region from exercising.”enter image description here


The legs meet the front and rear of the body. So groin is correct. The rear area is the buttock. I realise you are thinking of the inside of the leg but there is no inside bit of the Torso. Therefore it either joins the front or the back of the torso.

groin C.E.D. noun [ C ] UK ​ /ɡrɔɪn/ US ​ /ɡrɔɪn/ groin noun [ C ] (BODY) ​ the place where your legs meet the front of your body:

He pulled a muscle in his groin.

  • Your citation explicitly states the "front of [the] body". I'm looking for the 'underside' of the torso. I have edited the question to clarify. – user358034 Aug 18 '19 at 14:28
  • I have edited the question but your idea is wrong, there is no underside of the torso it tapers into the legs and genitals around the groin or from the buttocks to the legs. The groin is the inside of the legs where you would get a hernia for example. But that attaches to the front of the body. You would treat a hernia fromthe front not through the buttock. – Brad Aug 18 '19 at 14:39
  • I'll post a image tonight when I get home. – user358034 Aug 18 '19 at 14:40
  • It's OK I am not going to argue with you If I am incorrect, then just don't accept my answer or I can delete it if you want it it no problem. – Brad Aug 18 '19 at 14:45
  • I have added a link to an image in my question. – user358034 Aug 18 '19 at 19:29

That area is the perineum (wikipedia):


The perineum is the space between the anus and scrotum in the male and between the anus and the vulva in the female

  • The perineum is behind the genitals, while my question asks about the area to the side of the genitals. Also, the perienum (Greek for "dam") is raised while the area I ask about is depressed. I am sorely tempted to post an image of the area I mean, but I suspect I will get banned if I do. – user358034 Aug 18 '19 at 14:37
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    @B.L.E. - You can always provide a link to the image. – Justin Aug 18 '19 at 14:38
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    @Justin Good to know. I'm at work now, but will find a siutable image tonight, when I get home (about in three hours). – user358034 Aug 18 '19 at 14:39
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    To get this clear, @B.L.E., you are looking for something at the underside of the torso, between the genitals and the legs? I may not be a standard human being, but the are next to my genitals most certainly extends into what I consider the front of my body. I'll wait for the link, I guess :) – oerkelens Aug 18 '19 at 14:58
  • @oerkelens I have added a link to an image in my question. –– In my body, the medial compartment of the thigh, including the adductor muscles, and the sinews connecting the thigh muscles to the pelvis at the public crest, clearly delimit the groin on the front part of my body from the area in question on the underside of my trunk. You can feel the taut tring of sinew and muscle that streches from the leg to below the upper end of your genitals if you move your leg to the side. – user358034 Aug 18 '19 at 19:54

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