Definition of "tiddly"

As far as he could tell, except for her evening ‘tiddlies’, two rather hefty drinks taken ‘neat’ without the diluting benefit of water or ice, his mother had very nearly stopped her drinking.

2002, Pat Patterson, SpiritPath, iUniverse, page 429

Well, hell, I figured we’d just save that money, get us a few tiddlies at Fat Ernst’s instead.

2010, Jeff Jacobson, Wormfood, Medallion Press, page 54

JC heard him remark, “I need a bit of the tiddly my dear. It’s been a hard day.” Tiddly, hm, must be an English drink?

2012, Johnny Mack Hood, Cannibal Caper, AuthorHouse, page 101