flute in Greek

(colloquial) A recorder, also a woodwind instrument.

A lengthwise groove, such as one of the lengthwise grooves on a classical column, or a groove on a cutting tool (such as a drill bit, endmill, or reamer), which helps to form both a cutting edge and a channel through which chips can escape.

(architectural element, firearms) A semicylindrical vertical groove, as in a pillar, in plaited cloth, or in a rifle barrel to cut down the weight.