DDOS

Short definition from Wiktionary

Noun

1. 1
   Alternative form of DDoS.
2. 2
   A distributed denial-of-service attack, one that originates from many different (geographically and network topographically) sources, on a network of networks such as the Internet.
3. 3
   plural of DDO

Verb

1. 1
   Alternative form of DDoS.
2. 2
   To attack by DDoS.