Train - leave on it for one of The Heights (9)

I believe the answer is:

elevation

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'one of the heights' is the definition.
'elevation' can be an answer for 'heights' (thesaurus). I'm not certain of the 'one of the' bit.

'train leave on it' is the wordplay.
'train' indicates an anagram (to train can mean to grow something into a shape).
'leave'+'on'+'it'='leaveonit'
'leaveonit' anagrammed gives 'ELEVATION'.

'for' is the link.

Can you help me to learn more?

(Other definitions for elevation that I've seen before include "high ground" , "plan" , "Grandeur" , "Architectural drawing" , "Height above a given level" .)

I've seen this clue in the Irish Times.

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