An Etymological Dictionary of Astronomy and Astrophysics

1a) To stop the breath of by compressing the throat; strangle.

1b) To compress by fastening something tightly around.

2a) To obstruct or check the flow of (a fluid), as to control the speed of an engine.

2b) To reduce the pressure of (a fluid) by passing it from a smaller area to a larger one (Dictionary.com).

Etymology (EN): M.E. throtelen, from throten “to cut the throat of (someone), strangle,”
from → throat.

Etymology (PE): Tâsenidan, from Dezfuli tâsenidan “to choke, compress the throat,” cf. Laki, Šuštari tâsenan “to strangle,” Ilâmi tâsânen “to strangle,” Baxtiyâri tâsest “suffocated,” Fini Bandar-Abbâs tâsaki “exhausted,” (Dehxodâ) tâsidan “to be afflicated or sad,” tâsidé “tired, emaciated,” Baluci ta(n)sit “to be out of breath, pant;” Skt. tam- “to become suffocated, exhausted;” L. temulentus “drunken;” PIE *temH- “to faint, be exhausted” (Cheung 2007).