Definition of giant crab
1 : a Japanese deep-sea edible spider crab (Macrocheira kaempferi) that measures about a foot across the shell and has legs many feet in length
2 : an immense Australian edible sea crab (Pseudocarcinus gigas) that attains a weight of 30 pounds and has the large claw 17 inches in length
Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.
Start your free trial today and get unlimited access to America's largest dictionary, with:
- More than 250,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Seen and Heard
What made you want to look up giant crab? Please tell us where you read or heard it (including the quote, if possible).