bind on equip

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective online gaming Describing a piece of equipment (armor, weapons, accessories) that becomes bound to a player character when equipped by them. The player may sell/trade/give it to another character so long as they have not used it. After use, the player may only sell it to an in-game vendor or discard it, destroying the item. Used mainly on quest rewards and moderate to rare drops. Compare to bind on pickup.
• verb online gaming To become permanently associated with a player character upon being equipped.