Old Tom

The Slang Dictionary Etymological Historical and Anecdotal · 1913 · p. 22
extra strong gin; sometimes termed CAT’S WATER . Various reasons are given for the use of the words Old Tom . The distillers have the sign of a tom cat on their illuminated placards. The origin of the phrase is, however, in the fact that the managing clerk of a once celebrated “gin-spinning” firm, who was known as Old Tom , used to keep a special bottle of extra good stuff with which to regale customers when they settled their accounts. To get a drink of Old Tom’s was then a great favour. Gradually the title became popular as representing very good strong gin. Oliver , the moon; “ OLIVER don’t widdle,” i.e. , the moon does not shine. Nearly obsolete.
Readham'da tam maddeyi gor →