In music, a glissando (Italian: [ɡlisˈsando]; plural: glissandi, abbreviated gliss.) is a glide from one pitch to another
Play (help·info)). It is an Italianized musical term derived from the French glisser, “to glide”. In some contexts, it is distinguished from the continuous portamento. Some colloquial equivalents are slide, sweep (referring to the “discrete glissando” effects on guitar and harp, respectively), bend, smear, rip (for a loud, violent gliss to the beginning of a note),^[1] lip (in jazz terminology, when executed by changing one’s embouchure on a wind instrument),^[2] plop, or falling hail (a glissando on a harp using the back of the fingernails).^[3]

https://en.wikipedia.org/wiki/Glissando