A Royal Australian Air Force E-7A Wedgetail aircraft is prepared for a sortie during a Red Flag-Alaska exercise at Joint Base Elmendorf-Richardson, Alaska, Aug. 9, 2019. (2nd Lt. Mark Goss/Air Force) ...

A dictionary is a list of words or phrases and their definitions (what they mean). Dictionaries are arranged in alphabetical order. They help you to spell or understand any new words, so are a ...