pong UK /pɒŋ/US /pɑŋ/verb 3noun 2forms 3 verb3 •(UK, slang) to give off a strong bad smell, to stink“Give them a drink of this and thy father shall see them as they are. They shall speak from their black hearts.” “Pongs a bit,” sniffed Carrot. “Sure it's not poisonous?” — 1970 •(slang) to speak a line of a play in a showy, unnatural way, drawing more attention to it than it deserves •(slang) to make up words on stage after forgetting the real lines of the play[…] and the “good old crusted” actor, forgetting the lines of the author, used without compunction to cover his discomfiture by inventing a text of his own–an achievement known as "ponging." — 2016 noun2 •(UK, slang) A stench, a bad smell.Carrot ran past him to get to the barrel first, and peered down at the cowering Catweazle. “No rats, Dad,” he said. “What's that terrible pong, then?” said Mr Bennett, sniffing. — 1970 •A packet sent in reply to a ping, thereby indicating the presence of a host. formsponged · ponging · pongs