1. (noun)spider predatory arachnid with eight legs, two poison fangs, two feelers, and usually two silk-spinning organs at the back end of the body; they spinsilk to make cocoons for eggs or traps for prey
2. (noun)spider, wanderer a computer program that prowls the internet looking for publicly accessible resources that can be added to a database; the database can then be searched with a search engine
Definition of 'spider' 
