There are 2 definitions of Cu in English:

Cu

Line breaks: Cu

symbol

The chemical element copper.

Origin

from late Latin cuprum.

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Word of the day middlescent
Pronunciation: ˌmɪdəˈlɛs(ə)nt
adjective
middle-aged, but still maintaining youthful interests and activities 

There are 2 definitions of Cu in English:

CU

Line breaks: CU

abbreviation

1Christian Union.
1.1 informal See you.