An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

1) Tha end part of a → pipe, → hose, or → tube through which a → stream of → fluid is directed.
2) A part in a → rocket → engine that accelerates the exhaust gases from the combustion chamber to a high → velocity.

M.E. noselle, diminutive of → nose.

Kalap "the beak of a bird" (Biruni, at-Tafhim), may be from *galap-, ultimately from Proto-Ir. *ui-lap-; cf. Mid.Pers. lap "lip," Mod.Pers. lab cognate with L. labium, E. lip.

The portion of a nozzle with the smallest → cross section.

→ nozzle; → throat.