Alaska crab alas·kac·rab uncommon noun 1. meat of large cold-water crab; mainly leg meat SynonymsAlaska king crabAlaskan king crabking crabAlaska crab 2. large edible crab of northern Pacific waters especially along the coasts of Alaska and Japan Synonymsking crabAlaska crabAlaskan king crabAlaska king crabParalithodes camtschatica Related words Broader terms crab Parts king crabParalithodes Part of Alaska king crab WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.