Terrible danger in the yard (6)
I believe the answer is:
garden
'yard' is the definition.
(I know that garden is a type of yard)
'terrible danger' is the wordplay.
'terrible' indicates anagramming the letters.
'danger' is an anagram of 'GARDEN'.
'in the' is the link.
(Other definitions for garden that I've seen before include "Cultivated area" , "Plot of ground for plants" , "Ranged (anag.)" , "Where, eg, flowers are grown" , "Area for growing fruit, veg or flowers" .)