WordNet records no synonym and no antonym for four-tailed bandage. It is the only member of its synset, which is common for technical, taxonomic and single-sense vocabulary — there is no other English word that means the same thing. The broader and narrower terms below are the useful relations in that case.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
a bandage consisting of a strip of cloth split in two on both ends; the central part is placed under the chin to restrict motion of the mandible and the tails are tied over the top of the head
Synonyms, antonyms and the broader and narrower relations for four-tailed bandage come from Princeton University’s WordNet. Full sources and licences.