Definition of "bong"

bong¹

/bɒŋ/

noun
plural bongs
1. (slang) The clang of a large bell.
  Quotations
  An argument began as to whether the trap door would open on the first bong of eight or the eighth bong of eight. A man said he'd been told on the wireless that it was the first bong of Big Ben in London which told the time, […]
  1989, Malcolm Lynch, The kid from Angel Meadow, page 152
2. (slang) Doorbell chimes.
verb
third-person singular simple present bongs, present participle bonging, simple past and past participle bonged
1. (slang) To pull a bell.
2. (slang) To ring a doorbell.

bong²

/bɒŋ/

noun
plural bongs
1. A vessel, usually made of glass or ceramic and filled with water, used in smoking various substances, especially cannabis.
2. An act of smoking one serving of drugs from a bong.
  Quotations
  Harry had a bong after his swim and then sprawled on the couch watching music videos.
  2008, Christos Tsiolkas, The Slap, London: Atlantic Books, page 115
3. A device for rapidly consuming beer, usually consisting of a funnel or reservoir of beer and a length of tubing.
verb
third-person singular simple present bongs, present participle bonging, simple past and past participle bonged
1. To smoke a bong.

bong³

/bɒŋ/

noun
plural bongs
1. A very wide piton.

bong⁴

/bɒŋ/

noun
plural bongs
1. Alternative spelling of bung (“purse”)

bong⁵

/bɒŋ/

noun
plural bongs
1. (ethnic slur) An Australian Aboriginal person.