In amateur radio, especially CW/morse code, CQ means "looking for someone to talk to". It's an abbreviated homonym for "seek you".
If you hear "CQ CQ CQ de WB6NOA" being transmitted, it would mean the person who owns call sign WB6NOA is looking to talk to someone on this frequency.
it's strange how a language that absorbs everything it comes across didn't bag this, perhaps there something else in english that does the same job?