copper

Từ điển Oxford Advanced Learner 8th

cop·per [copper coppers] BrE [ˈkɒpə(r)] NAmE [ˈkɑːpər] noun
1. uncountable (symb. Cu)a chemical element. Copper is a soft reddish-brown metal used for making electric wires, pipes and coins
•a copper mine
•copper pipes
•copper-coloured hair
2. coppersplural (BrE)brown coins that do not have much value
•I only paid a few coppers for it.
3. countable (BrE, informal)a police officer

Word Origin:
senses 1 to 2 Old English copor coper Dutch koper German Kupfer late Latin cuprum Latin cyprium aes ‘Cyprus metal’ sense 3 mid 19th cent. ↑cop ↑-er

Example Bank:
•Her hair shone like burnished copper.
•She works mainly in copper.
•copper alloyed with arsenic
•Apparently, her dad's a copper.
•There are a couple of coppers waiting outside.

• Từ đồng nghĩa / Synonyms:
  copper color, bull, cop, fuzz, pig, Cu, atomic number 29