Definitions
1.NounA piece of armor which covers the elbow.
2.NounA sovereign (the coin).
3.Noun↑ “cǒutẹ̄r, n.”, in MED Online, Ann Arbor, Mich.: University of Michigan, 2007.
4.Noun↑ Jonathon Green, Cassell's Dictionary of Slang (2005), "couter n. (also couta, cooter) [mid-late 19C]"