Dictionary.net

A method of passing a catheter or sound.

(the master's turn). An obsolete and dangerous procedure. The introduction of a sound into the male urethra by placing the shaft between the patient's thighs, passing the instrument into the urethra until its point is arrested at the bulb; the handle is then made rapidly to describe a semicircle until it reaches a vertical position, when it is once more depressed between the thighs. [Fr.]