n. A dish of fish or clams boiled with biscuits or crackers, pork, potatoes, onions, etc., and variously seasoned. It is common among the fishermen on the banks of Newfoundland and in New England.n. A picnic party, especially at the sea-shore, at which the main dish is chowder. See def. 1.n. A fish-seller. Halliwell.To make a chowder of: as, to chowder fish.