Habitforming
Meaning: (of a drug or activity) addictive.
Hackle
Meaning: A hackle is a feather on the neck of a bird, such as a rooster or hen. In fly fishing, hackle refers to the feathers of certain birds, typically roosters, that are used to create flies or lures.
Sentence: The most common type of hackle used in fly tying is the feather from the neck of a rooster. These feathers have long, stiff fibers that can be wound around a hook to create a body and legs for a fly. The hackle fibers are also used to create the movement in the fly that imitates the movement of an insect or other food source in the water.
