A fly in the meat sets everyone on edge (6)
I believe the answer is:
tsetse
'a fly' is the definition.
(biting fly found in tropical Africa)
'the meat sets everyone on edge' is the wordplay.
'TSETSE' is hidden in amongst the letters.
However, I am not sure how the hidden word is indicated.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for tsetse that I've seen before include "Disease-carrying fly" , "cause of sleepiness?" , "bloodsucker" , "fly across Africa" , "source of sleeping sickness" .)