Definition of "spider"

Any of various eight-legged, predatory arthropods, of the order Araneae, most of which spin webs to catch prey.
A program which follows links on the World Wide Web in order to gather information.
A float (drink) made by mixing ice-cream and a soda or fizzy drink (such as lemonade).
A spindly person.
A man who persistently approaches or accosts a woman in a public social setting, particularly in a bar.
A stick with a convex arch-shaped notched head used to support the cue when the cue ball is out of reach at normal extension; a bridge.
A cast-iron frying pan with three legs, once common in open hearth cookery. They were generally called spiders both in England and in America.
A part of a crank, to which the chainrings are attached.
Heroin (street drug).
Part of a resonator instrument that transmits string vibrations from the bridge to a resonator cone at multiple points.