Certain sausage, informally
I believe the answer is:
brat
'certain sausage informally' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for brat that I've seen before include "Mervyn -- (Titus Groan)" , "Little terror" , "A spoiled badly-behaved child" , "Spoilt kid" , "Bad child - pack member!" .)