Hiker's sports jacket?

• Proper attire for picking up a series of clues?
• Bill Walton, in the 1970s [43]
• “You might call me a pathologist,” said the ___
• First person to do something entirely new

Wiktionary Word definitions in Wiktionary
n. 1 One that blaze a trail to guide others; a pathfinder. 2 (context figuratively English) An innovative leader in a field; a pioneer.

Wikipedia Word definitions in Wikipedia
Trailblazer was a suspended monorail that operated at Fair Park in Dallas, Texas from 1956 to 1964. It was the first commercially operated monorail system in the United States.

WordNet Word definitions in WordNet
n. someone who marks a trail by leaving blazes on trees someone who helps to open up a new line of research or technology or art [syn: pioneer , innovator , groundbreaker ]

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
by 1893, from trail (n.) + agent noun from blaze (v.3).