to move air into and out of the lungs to cause worry to someone to separate or remove something from something else that it is connected to an object or machine that has been invented for a particular purpose something dangerous or serious, such as an accident, which happens suddenly or unexpectedly and needs fast action in order to avoid harmful results to put something inside something else, or to add something, especially words,to something else a covering for all or part of the face that protects, hides, or decorates the preson wearing it a set of ideas or a plan of what to do in particular situations that been agreed officially by a group of people, a business organization, a government, or a political party the force that a liquid or gas produces when it presses against an area to move something towards yourself, sometimes with great physical effort at the back of something to give freedom or free movement to someone or something a state in which or a place where you are safe and not in danger or at risk to become tighter or to make something become tighter, firmer, or less easy to move used to emphasize how important or serious something is