catloaf UK /ˈkæt.ləʊf/US /ˈkæt.loʊf/noun 1verb 1forms 4 noun1 •(slang) The loaflike form of a domestic cat sitting with its paws and tail tucked underneath its body.And Gary never got to see him do the full catloaf, where he curled up face-down so that all that stuck out were the tips of his ears. I never got a picture of that, either. — 1999 verb1 •(slang) (of a cat) to go into a catloaf position. formscatloafed · catloafing · catloafs · catloaves