'trailblazing' originates from the combination of 'trail' and 'blaze', where 'trail' meant 'a path or track' and 'blaze' meant 'to mark a path with blazes or marks'.

'trailblazing' evolved from the practice of marking trails with blazes to guide others, eventually becoming a metaphor for pioneering new paths or ideas.

Initially, it meant 'marking a path with blazes', but over time it evolved into its current meaning of 'pioneering or innovative'.