Inguen refers to a part of an animal that has a special function or is supplied by a given artery or nerve; "in the abdominal region"

The snout of a swine., To grunt to growl; to snarl; to murmur., The line between the lower part of the abdomen and the thigh, or the region of this line; the inguen., The projecting solid angle formed by the meeting of two vaults, growing more obtuse as it approaches the summit., The surface formed by two such vaults., A frame of woodwork across a beach to accumulate and retain shingle., To fashion into groins; to build with groins.