What does Lest stand for?

Licencie es Lettres - Licentiate in Letters - French (BARN)

John Lestician Trucking - Common carrier symbol

Large Earth-Based - formerly, European Solar Telescope

Large Earth Survey Telescope

Launch Electronics System Test

Launch Enable System Turret (IAA)

Low End Systems and Technologies

Low-Energy Speech Transmission

Santiago - Spain - ICAO location identifier (ICLI)