Definition

/pɪŋ/

noun

A high-pitched, short and somewhat sharp sound.
“My car used to make an odd ping, but after the last oil change it went away.”
(submarine navigation) A pulse of high-pitched or ultrasonic sound whose echoes provide information about nearby objects and vessels.
“The submarine sent out a ping and got an echo from a battleship.”
A packet which a remote host is expected to echo, thus indicating its presence.
“The network is overloaded from all the pings going out.”
An email or other message sent requesting acknowledgement.
“I sent a ping to the insurance company to see if they received our claim.”
Latency.

verb

To make a high-pitched, short and somewhat sharp sound.
“My car was pinging until my last oil change.”
(submarine navigation) To emit a signal and then listen for its echo in order to detect objects.
To send a packet in order to determine whether a host is present, particularly by use of the ping utility.
“I'm pinging their server.”
(by extension) To send an email or other message to someone in hopes of eliciting a response.
“I'll ping the insurance company again to see if they've received our claim.”
To flick.
“I pinged the crumb off the table with my finger.”