geoduck 的定义
- a very large, edible, saltwater clam of the genus Panope that burrows into the mud, feeding through a long siphon, the so-called neck, that extends upward: specimens of P. generosa, of the waters off western Canada and northwestern U.S., have been found to live more than 140 years, and some have exceeded a shell length of 10 inches, a siphon length of 5 feet, and a weight of 15 pounds.