Jaw (hunting)
A part of a steel trap that comes together because of the action of the springs.
Jaw Spread
The distance between the inside of both jaws of a trap when measured across the trap jaws on a line perpendicular to a line drawn through the jaw pivot points when the trap is in a set position.
Jetties
Granite boulders used to protect coastal inlets and passes from sand erosion.
Jovian Planet
Any of the four outer, gaseous planets: Jupiter, Saturn, Uranus, and Neptune.
Jump the String (hunting)
When an animal hears the “twang” of an archer releasing an arrow and reacts, sometimes moving out of the path of the arrow before it arrives.