Crossword Genius

At the driving place, all alcohol free (8)

Ross

I believe the answer is:

teetotal

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'alcohol free' is the definition.
Both the definition and answer are adjectives. Perhaps they are linked in a way I don't understand?

'at the driving place all' is the wordplay.
'at' means one lot of letters go next to another.
'the driving place' becomes 'tee' (a golfer drives a ball from a tee).
'all' becomes 'total' (I can't justify this - if you can you should believe this answer much more).
'tee'+'total' is 'TEETOTAL'.

Can you help me to learn more?

(Other definitions for teetotal that I've seen before include "Abjuring alcohol" , "Sober" , "On the wagon" , "Abstaining completely from alcohol" , "not taking a drop" .)

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