Bird run over by train (4)
I believe the answer is:
rail
This might be a double definition.
'bird run over' is the first definition.
'rail' can be an answer for 'bird' (a wading bird). I'm unsure of the 'run over' bit.
'train' is the second definition.
(I know that train can be written as rail)
'by' is the link.
Can you help me to learn more?
(Other definitions for rail that I've seen before include "Use abusive language" , "Barrier around lair" , "Bar; waterside bird" , "A bird; bar to hang on" , "Bar of rolled steel" .)