n. any of several small marine crustacean species of plankton in the order Euphausiacea in the class Malacostraca
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. shrimp-like planktonic crustaceans; major source of food for e.g. baleen whales
Word Usage
"Their definition of forage fish includes fishes, squids, and the shrimp-like crustaceans called krill that swarm in cold waters where they feed everything from seabirds to whales."