Crossword Genius

... book flight? (6)

Ross

I believe the answer is:

exodus

I believe this is a double definition.

'book' is the first definition.
(I know that Exodus is a book)

'flight' is the second definition.
(I know that exodus is a type of flight)

(Other definitions for exodus that I've seen before include "A mass departure, as in 2nd book of Old Testament" , "Second book of the Old Testament" , "Outgoing" , "Departure of the holy book" , "Departure of the Israelites from Egypt, led by Moses" .)

I've seen this clue in The Sun, The Irish Times, The Telegraph and The Independent.
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