Yes, ping is a Scrabble word!

Verb

1. Hit with a pinging noise

2. Sound like a car engine that is firing too early

3. Make a short high-pitched sound

4. Contact, usually in order to remind of something

5. Send a message from one computer to another to check whether it is reachable and active

Noun

1. A river in western Thailand; a major tributary of the Chao Phraya

2. A sharp high-pitched resonant sound (as of a sonar echo or a bullet striking metal)