n. 1. One who croaks, murmurs, grumbles, or complains unreasonably; one who habitually forebodes evil. [ 1913 Webster ]
2. (Zool.) (a) A small American fish (Micropogon undulatus), of the Atlantic coast. (a) An American fresh-water fish (Aplodinotus grunniens); -- called also drum. (c) The surf fish of California. [ 1913 Webster ]
☞ When caught these fishes make a croaking sound; whence the name, which is often corrupted into crocus.