a distinctive or characteristic sound
"the song of bullets was in the air"
"the song of the wind"
"the wheels sang their song as the train rocketed ahead"
the imperial dynasty of China from 960 to 1279; noted for art and literature and philosophy
"The Song era produced some of the most exquisite poetry and porcelain in Chinese history."
A musical composition with lyrics for voice or voices, performed by singing.
"The choir rehearsed their new song until every note was perfect before the final performance."
In plain English: A song is a piece of music with lyrics that people sing.
"She sang her favorite song during the party."
Usage: Use this term to refer specifically to a melody accompanied by words meant to be sung rather than spoken. It is the standard word when distinguishing vocal music from instrumental pieces like symphonies or sonatas.
A former dynasty in China, reigning from the end of the Five Dynasties and Ten Kingdoms to the beginning of the Yuan.
"The expedition team spent three days navigating the treacherous rapids of the Song as they ventured deeper into the highlands of Papua New Guinea."
A river in Papua New Guinea
The word "song" comes from the Old English sang, which traces its roots back to a Proto-Indo-European root meaning "to sing." It has retained this original meaning as it traveled through Middle English into modern usage.