Definition of pressel in US English:

pressel

noun

  • An electric switch that is operated by a push-button; (originally) one hanging from the end of a length of flexible wire; (in later use) especially one on a piece of radio communication equipment, typically permitting transmission when depressed and reception when released. Now chiefly "pressel switch".

Origin

Late 19th century. Origin uncertain; probably from press + a suffix of uncertain origin (perhaps -el or -el), perhaps after tassel.

Pronunciation

pressel

/ˈprɛsl/