WordNet (r) 3.0 (2006):

Alaska crab
    n 1: meat of large cold-water crab; mainly leg meat [syn:
         Alaska king crab, Alaskan king crab, king crab,
         Alaska crab]
    2: large edible crab of northern Pacific waters especially along
       the coasts of Alaska and Japan [syn: king crab, Alaska
       crab, Alaskan king crab, Alaska king crab, Paralithodes
       camtschatica]