a percussion instrument consisting of a set of tuned metal bars arranged like a keyboard, it is played by striking the bars with mallets, producing a bright, bell-like sound
noun - the lack of ability, skill, or knowledge needed to do something successfully or correctly
noun, technical - an area of land that separates waters flowing to different rivers, basins, or seas
noun - the process of converting information or data into a code to prevent unauthorized access
noun - the process of combining several things into a single more effective or organized whole