: any of an order (Araneae synonym Araneida) of arachnids having a short, usually unsegmented abdomen linked to the cephalothorax by the pedicel, chelicerae modified into poison fangs, and two or more pairs of spinnerets at the posterior end of the abdomen for spinning threads of silk for various uses (as in making cocoons for their eggs or webs to catch prey)
: any of various other arthropods and especially arachnids that resemble the true spiders
: a cast-iron frying pan originally made with short feet to stand among coals on the hearth
: any of various devices consisting of a frame or skeleton with radiating arms or members