I was wondering about the history on the word 'tip'. Specifically, we use the word 'tip' at restaurants when we "Leave the waiter/ess a tip"….or say "Here's a tip: ". I was wondering, were these two meanings formed from the same place..maybe conversationally at a bar/restaurant (where some guy tells his friend "Let me give you a tip..").
Or..does it have no relation to a restaurant at all? There's also the tip of a sharp object (needle, etc) and to tip something over..but that's probably completely different.
Just a wild, albeit semi-educated, guess:
In French and German, the word for tip means drinking money (pourboire, Trinkgeld). Some Spanish speakers say "Pa' las sodas" (to get sodas with) which also implies drinking. So, could tip have come from tippling?