bung
1. [ verb ] give a tip or gratuity to in return for a service, beyond the agreed-on compensation
Synonyms: fee tip
Examples:

"Remember to tip the waiter" "fee the steward"

Related terms: give gratuity
2. [ verb ] close with a cork or stopper
Related terms: close
3. [ noun ] a plug used to close a hole in a barrel or flask
Synonyms: spile
Related terms: plug barrel
Similar spelling:   Bunge
  buying
  bungee
  buns
  bunk