From Longman Dictionary of Contemporary Englishpachydermpach‧y‧derm /ˈpækɪdɜːm $ -dɜːrm/ noun [countable] technicalHBA an animal with thick skin, such as an elephant
Examples from the Corpus
pachyderm• He then elects to take his new pet to California, but he only has five days to unload his pachyderm.• High slung, low slung, wobbly, pointy, pert, pigeon or pachyderm.Origin pachyderm (1800-1900) French Greek, from pachys “thick” + derma “skin” 