A woodwindinstrument consisting of a tube with a row of holes that produce sound through vibrations caused by air blown across the edge of the holes, often tuned by plugging one or more holes with a finger; the Western concert flute, a transverseside-blown flute of European origin
a lengthwise groove, such as one of the lengthwise grooves on a w:classical order|classical column, or a groove on a cutting tool , which helps to form both a cutting edge and a channel through which w:swarf|chips can escape