TB

"TB" is an abbreviation that may refer to any of the following:

• Trouble Brewing, an activity on the pirate island of Mos Le'Harmless
• Teleport Block, a spell that prevents a player from using teleportation for five minutes
• Tinderbox, an item used for lighting fires
• Toolbelt, a belt which can hold items
  • Dungeoneering toolbelt, similar to the normal toolbelt but for use in the Dungeoneering skill