planet
					
						
						[ˈplænət]
					
				
				
				
					
					
						1
						planet
						noun
					
					
						- a large, round object in space (such as the Earth) that travels around a star (such as the sun)
- the planet Earth
- —used in informal phrases to say that someone is not aware of what is really happening or has ideas that are not realistic or practical