Free dictionary online: translation in English, Spanish, French, Italian, Chinese, Russian, definitions, synonyms...
Results found in several dictionaries: Collins, Collaborative Dictionary
intestino 
a  adj 
frm  (=interno) internal 
[lucha] 
internecine
b  sm intestine, gut 
cáncer de intestino  intestinal cancer 
síndrome de intestino irritable  irritable bowel syndrome 
 intestino ciego caecum 
 intestino delgado small intestine 
 intestino grueso large intestine

Collaborative Dictionary     Spanish-English
intestino ciego pref. caecum Reverso General Dictionary 
intestino delgado pref. small intestine Reverso General Dictionary 
intestino grueso pref. large intestine Reverso General Dictionary 
***
'intestino' also found in translations in English-Spanish dictionary
caecum n. el intestino ciego Reverso General Dictionary 
cecum n. el intestino ciego Reverso General Dictionary 
intestine n. el intestino Reverso General Dictionary 
intestine exp. intestino Reverso General Dictionary 
bowel obstruction n. la oclusión del intestino Reverso General Dictionary 
large intestine n. el intestino grueso Reverso General Dictionary 
small bowel n. el intestino delgado Reverso General Dictionary 

"Collins Spanish Dictionary 8th edition published in 2005 © William Collins Sons & Co Ltd 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005"