Green’s Dictionary of Slang

cruiskeen lawn n.

(US) whiskey.

1830

J.B. Skillman N.Y. Police Reports 18: In the boat [was] well replenished ‘crooskeen lawn,’ or in unpoetical language, a jug of whiskey 51: Jane Davis, sometimes recognized as Mrs. Lecruse, all the way from Kilkenny, has a peculiar fondness for a little crooskeen lawn.