Ground-breaker laid T-bar on jacket (11)

I believe the answer is:

trailblazer

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'ground-breaker laid' is the definition.
I can't tell whether this defines the answer.

't-bar on jacket' is the wordplay.
'bar on' becomes 'rail' (rail is a kind of bar. I am not sure about the 'on' bit.).
'jacket' becomes 'blazer' (blazer is a kind of jacket).
't'+'rail'+'blazer'='TRAILBLAZER'

Can you help me to learn more?

(Other definitions for trailblazer that I've seen before include "Pioneer, innovator" , "trendsetter" , "Leader in the field" .)

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

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