Yes, ping is a Scrabble word!
...and is worth 7 points in Scrabble, and 10 points in Words with Friends
ping
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)
What Scrabble words can I make with the letters in ping?
3 Letter Words
2 Letter Words