<p><strong>Noun</strong></p><ul><li>any wingless, carnivorous arthropod of the class Arachnida, including spiders, scorpions, mites, ticks, and daddy-longlegs, having a body divided into two parts, the cephalothorax and the abdomen, and having eight appendages and no antennae.</li></ul><p><strong>Adjective</strong></p><ul><li>belonging or pertaining to the arachnids.</li></ul>