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ping (v.)hit with a pinging noise;
The bugs pinged the lamp shade
ping (v.)sound like a car engine that is firing too early;
the car pinged when I put in low-octane gasoline
ping (v.)make a short high-pitched sound;
the bullet pinged when they struck the car
ping (v.)contact, usually in order to remind of something;
I'll ping my accountant--April 15 is nearing
ping (v.)send a message from one computer to another to check whether it is reachable and active;
ping your machine in the office