DAILY UPDATED VOCABULARY WITH PICTURES. WEB.

• web
• 1 [singular]

   the Web

  the system on the Internet that allows you to find and use information that is held on computers all over the world [= the World Wide Web]
• on the web
• a guide to the best education-related sites on the Web
• 2 [countable] a net of thin threads made by a spider to catch insects:
• He watched a spider spinning its web.
• ➔ cobweb
• 3 [countable usually singular] a closely related set of things that can be very complicated
• a web of intrigue/deceit/deception/lies etc
• a tangled web of relationships
• 4 [countable] a piece of skin that connects the toes of ducks and some other birds, and helps them to swim well

Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.