1.  n. liquor; strong liquor.  A little more tipple, Tom?  
2.  tv. & in. to drink liquor; to sip at a vessel of liquor.  He’s been tippling beer since early morning.  
3.  n. a drink of liquor.  I’ll take just a little tipple—for my arthritis, you know.  
4.  n. a drinking bout.  Well, Uncle Harry’s off on a tipple again.