[{"Bold_text": "verb (used without object)", "List Items": ["to produce a sharp sound like that of a bullet striking a sheet of metal."]}, {"Bold_text": "verb (used with object)", "List Items": ["Computers.to send an echo-request packet to (an IP address) and use the echo reply to determine whether another computer on the network is operational and the speed at which the data is being transferred.", "to make contact with (someone) by sending a brief electronic message, as a text message:The design team should ping marketing to set up a meeting next week.Ping me when you arrive, and I’ll meet you at the door."]}, {"Bold_text": "noun", "List Items": ["a pinging sound.", "an infrasonic or ultrasonic sound wave created by sonar in echolocation.", "an acoustic signal transmitted to indicate a location:Rescue crews were able to follow the ping and locate the flight recorder.", "Computers.an echo-request and echo-reply protocol that tests a connection online or in a network by sending a packet to a host IP address and measuring the round-trip speed of data transfer.", "one of the possible sounds made by an electronic or mobile device to signal the receipt of data, as a phone or text message."]}]