bristletail/ˈbɹɪsəlˌteɪl/EtymologyCalque of translingual Thysanura, as Ancient Greek θύσανος (thúsanos, “bristle”) + Ancient Greek οὐρᾱ́ (ourā́, “tail”). By surface analysis, bristle + tail.nounAny of various small, active six-legged arthropods that have two or three bristles at the ends of their abdomens and that do not have wings. These were formerly classified together in the insect subclass Apterygota or the order Thysanura but are no longer considered closely related:; jumping bristletails in the insect order ArchaeognathaAny of various small, active six-legged arthropods that have two or three bristles at the ends of their abdomens and that do not have wings. These were formerly classified together in the insect subclass Apterygota or the order Thysanura but are no longer considered closely related:; insects in the order Zygentoma such as silverfish and firebratsAny of various small, active six-legged arthropods that have two or three bristles at the ends of their abdomens and that do not have wings. These were formerly classified together in the insect subclass Apterygota or the order Thysanura but are no longer considered closely related:; two-pronged bristletails in the hexapod order Diplura