Webster’s Revised Unabridged Dictionary · 1913 Spider web Spi′der web′ (wĕb′), or Spi′der's web′ . (Zoöl.) The silken web which is formed by most kinds of spiders, particularly the web spun to entrap their prey. See Geometric spider, Triangle spider, under Geometric, and Triangle. ‹ Spider stitch Spidered ›