quahog
- n Atlantic coast round clams with hard shells; large clams usually used for chowders or other clam dishes
 - n an edible American clam; the heavy shells were used as money by some American Indians
 
- Estimated age, in years, of a quahog clam found off the coast of Iceland.
 - Sox Manager "Marse Joe" McCarthy, who could teach taciturnity to a quahog, agrees it will be a tough race.