*Over here police officers in some places are referred to as having "blue blood", ergo the word.
- Oh, and there's even a tv show by that name about, of all things, the police.
@Danny - we've got that name too, as well as bacon, or fuzz , black and white, boys in blue, ...
Oh good grief! Either you're up late or early! Now I have to change MY word (the same you just posted btw!