subs. phr. (nautical).The ships poulterer; also BILLY DUCKS.
1840. A. A. HARWOOD, U.S.N., Mess-Table Chat. As to chanticleer, the keeper of the livestock, JEMMY DUCKS, had long ceased to regard him as worthy of his solicitude.
1883. W. C. RUSSELL, Sailors Language, s.v.