noun
also nodule worm
1. : any of several nematode worms (genus Oesophagostomum ) that are parasitic in the large intestine of ruminants and swine where they cause swellings of the intestinal wall resembling abscesses
2. : a filarial worm ( Onchocerca gibsoni ) causing nodular swellings in the skin and subcutaneous tissues of Australian cattle