Crossword Genius

Put first pram on back walkway (4)

Ross

I believe the answer is:

ramp

I'm a little stuck... Click here to teach me more about this clue!

'walkway' is the definition.
(I've seen this in another clue)

'put first pram on back' is the wordplay.
'pram' anagrams to 'RAMP'.
Though, I am not clear how the anagram is indicated.

Can you help me to learn more?

(Other definitions for ramp that I've seen before include "Change of level - swindle" , "Inclined walkway" , "Smoothed-out stairs" , "Sloping surface; swindle" , "cheat" .)

I've seen this clue in the Sydney Morning Herald.
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