predatory arachnid that usually has silk-spinning organs at the back end of the body; they spin silk to make cocoons for eggs or traps for prey
a skillet made of cast iron
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
chiefly nocturnal predacious arthropod having a flattened body of 15 to 173 segments each with a pair of legs the foremost being modified into poison fangs