Pelt across Spain in flight (5)
I believe the answer is:
skein
'flight' is the definition.
(thesaurus)
'pelt across spain' is the wordplay.
'pelt' becomes 'skin' ('skin' can be a synonym of 'pelt').
'across' is an insertion indicator.
'spain' becomes 'e' (abbreviation for Espana).
'skin' going around 'e' is 'SKEIN'.
'in' acts as a link.
(Other definitions for skein that I've seen before include "Loosely-coiled bundle of wool" , "Flock of flying geese" , "Piece of loose-coiled yarn" , "Ball of yarn" , "Coil of wool - flock of geese" .)