"bungs" in the noun sense

1. bung, spile

a plug used to close a hole in a barrel or flask

"bungs" in the verb sense

1. tip, fee, bung

give a tip or gratuity to in return for a service, beyond the compensation agreed on

"Remember to tip the waiter"

"fee the steward"

2. bung

close with a cork or stopper

Source: WordNet® (An amazing lexical database of English)

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