Furrowed (6)
'furrowed' is the definition.
(synonyms)
This is all the clue.
(Other definitions for lined that I've seen before include "(Of a face) showing its age" , "Ruled (paper); careworn (face)" , "Covered inside" , "displaying signs of age" , "What ruler did" .)
'furrowed' is the definition.
(thesaurus)
This is all the clue.
(Other definitions for ridged that I've seen before include "Corrugated" , "With thin raised bands" .)