Crossword Genius

Authorise advance (4)

Ross

I believe the answer is:

pass

I believe this is a double definition.

'authorise' is the first definition.
('pass' can be a synonym of 'authorise')

'advance' is the second definition.
(passing is a kind of advancing)

(Other definitions for pass that I've seen before include "Ratify for saps" , "I've no idea" , "Spend (19, say) -- don't know" , "What a hooker may do" , "Progress" .)

I've seen this clue in The Telegraph.
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