(A). An eating-house where chops and steaks are served.
“John Bull ... would set up a chop-house at the very gates of paradise.” —Washington Irving: vol. i. chap. vi. p. 61.
A Chinese custom-house is called a Chop-house (Hindu, chap, a stamp).
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894