Browsing through the dictionaries I found in leo.org (German -English) as the first offered translation for "tausend" "chiliad", a word I never consciously came accross before (though I have been reading English books at least for the last thirty years).
Other DE-EN dictionaries didn't know this word.
Is it really used anywhere for the number thousand?
I was already asking the www. It offered Mount Chiliad saying it was a Latin word meaning a group of one thousand. But there is no "ch" in latin. As a latin word I would offer "miliarius".