(countable) The sound of something solid landing.

(uncountable, UK, Australia, New Zealand, Canada, informal) Cheap or inferior everyday wine.

(military, slang, historical) AC Plonk

(countable, derogatory, Britain, law enforcement slang) A female police constable.

(transitive) To set or toss (something) down carelessly.

(reflexive) To sit down heavily and without ceremony.

(transitive, Internet slang) To automatically ignore a particular poster.

(followed by a location) Precisely and forcefully.

The sound made by something solid landing.

(Internet) The supposed sound of adding a user to one's killfile.