What is the meaning of Pong?

A stench, a bad smell.

To stink, to smell bad.

To deliver a line of a play in an arch, suggestive or unnatural way, so as to draw undue attention to it.

To invent a line of dialogue when one has forgotten the actual line.

A packet sent in reply to a ping, thereby indicating the presence of a host.

Alternative form of pung

ladle made from a gourd (used especially for rice beer)

pung (a set of three identical tiles)

the word that the tagged it says when catching a playmate, as in the game of hide and seek

Source: wiktionary.org