bung

nouns

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

bung, spile

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

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

bung, fee, tip

close with a cork or stopper

bung

is a type of (narrower)

move so that an opening or passage is obstructed; make shut

"Close the door"; "shut the window"