BoE

Bind on Equip, BoEs can be traded until they are equipped by a player

BoP

Bind on Pickup. A BoP cannot be traded once it is looted or created

Bot

The Botanica, a Tempest Keep instance in Netherstorm

BRD

Blackrock Depths, an instance underneath Blackrock Mountain between Searing Gorge and Burning Steppes.

BRT

Be Right There

BT

Black Temple, a level 70 25-man raid instance in Shadowmoon Valley

Buff

A beneficial spell cast on a monster or player.

Carebear

Player that avoids PvP and prefers PvE. Often used in reference to PvE or Normal servers as opposed to PvP servers.

Caster

A character that stays at a distance to heal allies or cast offensive spells on the enemy

CC

Crowd control. Any spell or ability which incapacitates the target for a certain amount of time, stopping it from harming the player or his party. Also refers to any class with such an ability.

CoA

Curse of Agony, a warlock spell that does damage over time. It ticks for more at the end of its duration than at the beginning.

CoD

Curse of Doom, a warlock spell that does a large amount of damage after 60 seconds

CoEx

Curse of Exhaustion, a warlock spell that slows movement. Requires a talent in the Affliction tree.

CoR

Curse of Recklessness, a warlock spell that decreases a target's armor while increasing its attack power. Also makes the target not flee due to any fear effects

CoS

Curse of Shadows, a warlock spell that increases shadow and arcane damage done to the target

CoT

Curse of Tongues, a warlock spell that causes the target to speak demonic, increasing cast time of spells. Also stands for Caverns of Time, a group of instances in Tanaris

CoW

Curse of Weakness, a warlock spell that decreases a target's attack power

Crit

Critical hit, an attack or spell that does increased damage or healing

Critters

Low level creatures that don't attack players and don't give experience points.

Crypts

Auchenai Crypts, an Auchindoun instance in Terokkar Forest