Late 19th century; earliest use found in The Times. From French Amer Picon (although apparently not attested until 1884; however the drink is believed to have been invented in 1837) from Amer bitter + the name of Gaetan Picon.
Definition of Amer Picon in US English:
Amer Picon
noun
= Picon.
Origin
Late 19th century; earliest use found in The Times. From French Amer Picon (although apparently not attested until 1884; however the drink is believed to have been invented in 1837) from Amer bitter + the name of Gaetan Picon.