Definitions of king crab:

• noun:   large edible crab of northern Pacific waters especially along the coasts of Alaska and Japan
• noun:   large marine arthropod of the Atlantic coast of North America having a domed carapace that is shaped like a horseshoe and a stiff pointed tail; a living fossil related to the wood louse
• noun:   large European spider crab
• noun:   meat of large cold-water crab; mainly leg meat