If you go fishing with a rod and a fishing line with a hook at the end of it, you’re an angler. An angler might fish off the end of a dock, or from a rowboat in the middle of a lake.
Anglers are distinguished by the fact that they fish with metal hooks, and they often release the fish they catch. You can also call one type of fish an angler, short for anglerfish, a big-headed, relatively small-bodied fish. Angler was originally a last name, and came to mean “fisherman” by about 1500, from the verb angle, “fish with a hook,” from the Old English angel, which means “angle,” but also “fishhook.”
a fisherman who uses a hook and line
fishes having large mouths with a wormlike filament attached for luring prey
a scheming person; someone who schemes to gain an advantage