FLASK
NOUNS
► BAT WING a half-pint flask, esp. of bootleg liquor → 1950 Amer. dial.
► MONKEY a barrel or flask for alcohol → 1850 obs.
► THUMB-BOTTLE a small flask, a phial → 1727
► TICKLER a liquor flask, esp. one holding a half-pint; a drink of liquor → 1809 Amer. dial.
Lexicophilia 