What the dog did to the rabbit's tail (3)
I believe the answer is:
bit
'tail' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'what the dog did to the rabbit's' is the wordplay.
'BIT' is hidden within the letters.
However, I'm uncertain how the hidden word is indicated.
Can you help me to learn more?
(Other definitions for bit that I've seen before include "Sank teeth in" , "Segment" , "gripped" , "Cutting piece of a drill (3)" , "A little coin" .)