ping

Concise Oxford English Dictionary © 2008 Oxford University Press:
ping/pɪŋ/

▶noun an abrupt high-pitched ringing sound. ▶verb

• 1 make or cause to make such a sound.

• 2 send an email or other electronic message to.

• 3 US another term for pink4.

– derivatives
pinger noun.

– origin C19: imitative.