Absent words - Š

What is this?
Occasionally I had to translate from Serbian to English, and hit my head against several walls, as it happens to any translator. One of these were the words which are absolutely missing in English. In several cases I actually asked Anglophones for help, but didn't get much.The missing Serbian words are described to the best of my ability.
16-III-2006 - 12-XI-2018 go home  
The word I can't translate
Description of a possible translation
šipak (rukom)
sign given by extending the thumb between the index and middle finger through a closed fist. Meaning "nothing to you" - the word šipak means rosehip, and this hand sign.
šlem
Helmet would be the word, if its meaning would include hardhats. Because a miner's hardhat, and a soldier's helmet are also each a šlem.
šubara
fur hat
except that it's not; word "hat" implies something with a brim, which šubara never has.