Airship (5)
'airship' is the definition.
(I know that zeppelin is a type of rigid airship)
This is the entire clue.
(Other definitions for zeppelin that I've seen before include "Cylindrical rigid airship" , "German invention" , "old gas-bag" , "Cigar'" , "Old flier" .)
'airship' is the definition.
(blimp is a kind of airship)
This is the entire clue.
(Other definitions for blimp that I've seen before include "Small nonrigid airship" , "David Low's cartoon colonel - airship used for publicity" , "Airship - barrage balloon" , "aircraft" , "full of hot air?" .)
'airship' is the definition.
(synonyms)
This is the entire clue.
(Another definition for dirigible that I've seen is " Airship".)