flash
Preserved but no longer current.
Knowing. Understanding another's meaning. The swell was flash, so I could not draw his fogle. The gentleman saw what I was about, and therefore I could not pick his pocket of his silk handkerchief. To patter flash, to speak the slang language. See PATTER.
Era: ca. 1811 (Georgian)
Sources & notes
Historical definition reproduced from Grose’s Dictionary of the Vulgar Tongue (1811 edition, public domain; Project Gutenberg #5402, retrieved 2026-07-31). Reflects the attitudes of its era.
Common questions
What does “flash” mean?
Knowing. Understanding another's meaning. The swell was flash, so I could not draw his fogle. The gentleman saw what I was about, and therefore I could not pick his pocket of his silk handkerchief. To patter flash, to speak the slang language. See PATTER.
Is “flash” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.