Trolls' slang in "The Hobbit" by J. R. R. Tolkien, chapter 2 "Roast Mutton"
Hello, everyone! Happy New Year! I've got some questions about trolls' slang. I managed to find some words in the dictionary, but there are some that I didn't find. So I tried to guess their meaning. For example, ['ell] means [hell], right? And [a-thinkin'] means [thinking]? [et] means [eaten]? By the way, what's the meaning of this "a-" before the verbs? For example, in the song of elves in the chapter 3 it appears again, in this context:
"O! Where are you going
With beards all a-wagging?
No knowing, no knowing
What brings Mister Baggins"
Trolls' context:
"What the ’ell William was a-thinkin’ of to bring us into these parts at all"
And could you please explain the meaning of the underlined phrase in this context:
"You’ve et a village and a half between yer, since we come down from the mountains. How much more d’yer want? AND TIME'S BEEN UP OUR WAY, when yer’d have said ‘thank yer Bill’ for a nice bit o’ fat valley mutton" Thank you very much in advance!