Abbreviation Meaning
Wb Welcome back
WC(ing), WC Woodcutting, wrong chat
Wdym What do you mean...
Wealth Ring of wealth
Wfs Waterfiends
WH/Whop(ping)/Whing World hop, expression meaning to change to a different world.
Whammy/Wham/War Warhammer
Whip Abyssal whip
Wildy Wilderness
WOM Wise Old Man
WTB Want to buy [item name]
WTS Want to sell [item name]
W# World #, where # is the world in question. e.g. "W60"