Slide
Slide 1. (Fr.: coulisse; Ger.: Zug; Scheide; It.: pompa), the U-shaped tube of a brass instr. which changes the length of the air column by its to-and-fro motion. See also: double slide; 2. (Fr.: coulisse; Ger.: Register), perforated strip of wood into which the jacks of plucked keyboard instrs. are inserted; more properly called slider, as the word is taken over from organ terminology; 3. see: tuning slide.