Glissando
WordNet
adverb
(1) (musical direction) in the manner of a glissando (with a rapidly executed series of notes)
"This should be played glissando, please"
noun
(2) A rapid series of ascending or descending notes on the musical scale
WiktionaryText
Noun
- A musical term that refers to either a continuous sliding one pitch to another (or "true" glissando), or an incidental scale played while moving from one melodic note to another (or "effective" glissando).