IPA is wrong - "cupper"
merged with translations found on http://elements.vanderkrogt.net/elem/cu.html with permission from the author.
conflict with Chinese
Should be an entry or mention of "copper-bottom". It's usually an adjective refering to an actual kitchen pots and pans, but it can also be used more figuratively as in a "copper-bottom identity" (timestap 22 minutes, 4x seconds in from April 10, 2008 Culture and Barbarism
Copper-one who cops it.
Having the same etymology as copper meaning policeman, copper meaning the one who 'cops it' or 'is copped' (i.e. hit on the head, mugged, etc) should be included.