1. One who angles.
2. (Science: zoology) a fish (Lophius piscatorius), of Europe and America, having a large, broad, and depressed head, with the mouth very large. Peculiar appendages on the head are said to be used to entice fishes within reach.
Synonym: fishing frog, frogfish, toadfish, goosefish, allmouth, monkfish, etc.