qua·hog /ˈkoˌhɔg, ˈkwɔ, ˈkwo, ˌhɑg/
  蚌蠣類[北美產]
  Qua·hog, Qua·haug  n.  Zool. An American market clam (Venus mercenaria). It is sold in large quantities, and is highly valued as food. Called also round clam, and hard clam.
  Note: ☞ The name is also applied to other allied species, as Venus Mortoni of the Gulf of Mexico.
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  quahog
       n 1: Atlantic coast round clams with hard shells; large clams
            usually used for chowders or other clam dishes [syn: quahaug,
             hard-shell clam, round clam]
       2: an edible American clam [syn: quahaug, hard-shell clam,
          round clam, Venus mercenaria, Mercenaria mercenaria]