Help with reading this.

I received a death certificate for a child in my husbands line from Chelmsford, Essex today and I am struggling to read the cause of death, I have tried googling what I think it says to no avail, can anyone decipher it for me please???
The death occured in 1840 and it is something I have never heard of, it looks like Febus Biliorco or Biliovco but Google has no idea, I will be so grateful if someone can work it out for me.

 

It looks to me like Febris Biliosa - a burning fever with vomiting.

 

I too could not decipher the Latin, but the moment I read Peter's response - combining Fever with Bilious -that did ring a bell. I recall years ago coming across a 19th century death description, which from memory I think was written (or more like scrawled in Doctors handwriting) as Bilious Fever. I spent some time trying to find out what that meant and recall finding a Wikipedia article explaining it as a sort of 'catch all' diagnosis for many disorders causing vomiting, often referred to as a Bilious attack. I think that as a best guess that is most likely the interpretation in Carol's case.

 

Goodness me no wonder I could not work it out I never learnt latin in school !!!! Thank you all so much for your kind help, the child in question was just 3 years old so this illness would have been very debillitating indeed and he was the 3rd child his parents lost in three years. So sad.

 

I must really thank you Peter for this article, it really gave in depth explanation of what this poor child and his parents must have gone through before his death.