Strange throw gully regularly catches (7)
I believe the answer is:
ghostly
'strange' is the definition.
(thesaurus)
'throw gully regularly catches' is the wordplay.
I cannot really understand how this works, but
'throw' could be 'host' (eg to throw a party) and 'host' is present in the answer.
This may be the basis of clue (or it may be nonsense).
(Other definitions for ghostly that I've seen before include "Phantasmal" , "Eerie, unnatural" , "Phantom-like, spectral" , "Spectral, like Marley" .)