Ignite (6)
'ignite' is the definition.
(I know that ignite is a more specific form of kindle)
This is the entire clue.
(Other definitions for kindle that I've seen before include "Linked (anag)" , "collection of books?" , "Start to burn" , "Modern book store" , "Light (flame), arouse" .)
'ignite' is the definition.
(synonyms)
This is all the clue.
(Another definition for catch fire that I've seen is " Get excited".)