E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Cop (To).
To catch [a fever, etc.]. To get copped is to get caught by the police. (Latin, capere, to take, etc.) A similar change of a into o is in cotched (caught).
1
They thought I was sleepin, ye know,
And they sed as Id copped it o Jim;
Well, it come like a bit of a blow,
For I watched by the deathbed of him.
Sims: Dagonet Ballads (The Last Letter).
I shall cut this to-morrow, said the younger man. Youll be copped, then, replied the other.T. Terrell: Lady Delmar.