"Cuil" is pronounced "cool," and is old Irish for knowledge.
It is also the latest search engine that challenges industry leader Google. (after similarly cool-sounding search engine names like Teoman, Vivisimo, Mahalo, Inktomi, Chacha, and others.)
The punchline: Cuil.com was developed by former Google employees, led by Anna Patterson.
Read all about it here. Or, try out a search on Cuil.com and see if you like the results. The results listing is unlike any other search engine--quite refreshing, actually. Though functionality and relevance remain to be seen.
Methinks I'll be giving Cuil a dry run. Why not "cuil it?"