A catch to hold the wheel of a carriage on a declivity.
A piece, as a lever, which is connected with a catch or detent as a means of releasing it; especially (Firearms), the part of a lock which is moved by the finger to release the cock and discharge the piece.
If you don't think your anxiety, depression, sadness and stress impact your physical health, think again. All of these emotions trigger chemical reactions in your body, which can lead to inflammation and a weakened immune system. Learn how to cope, sweet friend. There will always be dark days. Kris Carr
Yes, people pull the trigger - but guns are the instrument of death. Gun control is necessary, and delay means more death and horror. Eliot Spitzer
Your genetics load the gun. Your lifestyle pulls the trigger. Mehmet Oz
Climate change, in some regions, has aggravated conflict over scarce land, and could well trigger large-scale migration in the decades ahead. And rising sea levels put at risk the very survival of all small island states. These and other implications for peace and security have implications for the United Nations itself. Ban Ki-moon
If we each take responsibility in shifting our own behavior, we can trigger the type of change that is necessary to achieve sustainability for our race or this planet. We change our planet, our environment, our humanity every day, every year, every decade, and every millennia. Yehuda Berg