1. noun /sɜː(ɹ)f/
Waves that break on an ocean shoreline.
...perhaps it was the look of the island, with its gray, melancholy woods, and wild stone spires, and the surf that we could both see and hear foaming and thundering on the steep beach...
2. verb /sɜː(ɹ)f/
b) To browse the Internet.
Wikipedia foundation.