dappingA method of fly-fishing in which the fly is allowed to skip or dance on the water while line and leader are held above the water from a high rod.
DardevleA trademark for a brand of spoons typically used for trout and northern pike fishing.
die-offRefers to having many fish die at the same time, quite often baitfish; also referred to as a fish kill.
dillysA type of small earthworm popular for catching sunfish and trout.
dinkA small bass, usually under 6 to 8 inches long (also called a subcatchable).
dip baitA smelly paste-type bait primarily used for catfish.
dip netA net with a handle used to capture baitfish.
disgorgerDevice for removing hooks deeply embedded in the throat of fish.
dissolved oxygenThe amount of free (usable) oxygen in water. Usually designated in parts per million.
dobsonflyA large aquatic insect, the larva of which is the popular hellgrammite bait.
doll FlyA trademark for a brand of chenille-bodied, hackle-wrapped jig.
doodlesock or doodlesockingA method of cane-pole or long-pole fishing in which a lure or bait is repeatedly dipped and dragged through likely fish structures.
dorsal finA median fin located along the back of a fish. It is usually supported by rays, which sometimes gives the fin a fan- or sail-like appearance.
doughballA ball of bait made from bread or specially prepared dough used for bait-fishing. Commonly used for carp.
DownriggerA fishing device used on boats that allows a troller to fish a lure at a constant specific depth.
DragDevice on fishing reels that allows line to pay out under pressure, even though the reel is engaged; set correctly, it ensures against line breakage.
DrawdownLowering a lake level for a specific purpose.
drop shotA tackle rigging technique employing a hook tied to the line from four-inches to four-feet above the sinker.
drop-offA sudden increase in depth, often created by washes, small creek channels, canyons, pinnacles, and other submerged topographic features.
dry flyA fly which floats on the surface of the water by means of hackle (feather) fibers. An angler employing this technique is said to be dry-fly fishing.