Crossword Genius

Marched like first two steam roller designs (6)

Ross

I believe the answer is:

strode

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

I can't explain the rest of the clue.

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(Other definitions for strode that I've seen before include "Paced" , "Walked fast with long steps" , "went on foot" , "Galumphed" .)

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