angler

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun One who fishes with a hook.
• noun A scheming person.
• noun An anglerfish.

from The Century Dictionary.

• noun A general name of the pediculate fishes, from the presence of a modified free dorsal spine, or ‘fishing-rod,’ above the mouth.
• noun One who angles; a fisher with rod and line.
• noun The fish Lophius piscatorius, the typical representative of the family Lophiidæ (which see).

from the GNU version of the Collaborative International Dictionary of English.

• noun One who angles.
• noun (Zoöl.) 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. Called also fishing frog, frogfish, toadfish, goosefish, allmouth, monkfish, etc.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A person who fishes with a hook and line.
• noun An angler fish.
• noun Someone who tries to work an angle; a person who schemes or has an ulterior motive.
• noun obsolete, slang Pilferers or petty thieves, who, with a stick having a hook at the end, steal goods out of shop-windows, grates, etc.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun fishes having large mouths with a wormlike filament attached for luring prey
• noun a fisherman who uses a hook and line
• noun a scheming person; someone who schemes to gain an advantage