an object, such as a tool or weapon that was made by humans in the past a big size a company, usually an airline, that carrys things to keep safe organizing people or things to make them work together effectively having parts that extend in a number of directions to move slowly a plant or animal that has become rock after many thousands of years to grip something firmly with the hands the home of a bird or spider a book that covers the basics of a subject; a kind of paint the act of punishing someone the smallest unit or amount of energy the lines of light coming from an object not affected by something the study of public speaking or writing techniques the material that settles to the bottom of a liquid to put one thing on top of another e.g. books concerning surgery moving violently and unevenly