From the dusty deeps of the archives ...
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So, a whole list would be:
Proca
Honda
Schleuder
Sling
Slingshot
Prak
Waraq'a
Fronde
Fionda
Funda
Slangshot (whatever JeffH says...)
Slunga
Ka-ala
Imdugud (slingstone)
I can actually speak a lot of these languages quite well. I have two, maybe three passions and talents; languages, history, and weaponry. They all tie in somehow. I was actually learning a bit of Quechua recently, the language of the Inca (Runasimi, the quechua word for quechua, means "mouth of the people"). I am predicted and A* in German for my final exams, and in French. In fact, I am very near the top in these in the country. Still nice to learn a little more of a language, especially in relation to slinging. The language I am currently attempting to learn is Mohawk, language of, you guessed it, the Mohawk native Americans. Very, very difficult (even compared to quechua, with all it's glottals, and plosive consonants.) I will try to find the work for sling, but my dictionary is from 1847, with a rather limited number of words. However, due to the nature of the language, I can make it up. I will post it soon.