plašt

1. cloak; mantle; cape
   Glumac je izašao na scenu u crvenom plaštu. — The actor came on stage in a red cloak.
   Superheroji u filmovima često nose plašt. — Superheroes in films often wear a cape.
2. (usually pod plaštom) cover; veil; guise
   Lopovi su pobegli pod plaštom noći. — The thieves escaped under cover of night.
   Pod plaštom humanitarnog rada krio je prevaru. — He hid fraud under the guise of charity work.
3. (in geology) mantle
   Zemljin plašt se nalazi ispod kore. — The Earth's mantle lies beneath the crust.

Plašt is a wide sleeveless cloak (historical, theatrical, superhero), not a raincoat: the Russian «плащ» in the sense of rainwear is kišni mantil or kabanica in Serbian. In the figurative sense it mostly appears in the phrase pod plaštom + gen.