A flute is a thin woodwind instrument: you blow into it and put your fingers over the holes to make music.
There are many types of instruments, such as percussion, brass, and woodwind. One of the most popular woodwind instruments is the flute, which is thin and makes high-pitched sounds. The flute looks like a thin tube or pipe with a hole on each end and holes on the body: your fingers go up and down over the holes and you blow into the flute to make music. The word flute can also mean a groove in a column; fluted columns are common in classical Greek architecture.