Other forms: blazoned, blazons
To blazon is to display or proclaim something very publicly. Blazon it across the front page, blazoned on the shirt, blazon the news.
It nearly always appears as blazoned across or blazoned on, and it implies large letters and no modesty. The original sense is heraldic: to blazon a coat of arms is to describe it precisely in the technical language of heraldry.
1verbblazonTo display or proclaim something very publicly.
“The team's name was blazoned across the side of the bus in huge red letters.”
blazon is a displaying.
Old French blason meant a shield, then the description of the arms on it. The public sense grew from that.
Old French
blason — shield
Middle English
blason
English, today
blazon
Built from
From Middle English blason, blasoun (“shield”), from Old French blason (“shield”).
Etymology from Wiktionary, CC BY-SA