Sentence:  "Do not use such a <WSD>lubberly</WSD> expression, my dear Rose, if you respect your father's profession. On a vessel is a new-fangled Americanism, that is neither fish, flesh, nor red-herring, as we sailors say,— neither English nor Greek." 
Meaning of the word marked with <WSD> tags:  Lacking in seamanship; of or suitable to a landlubber who is new to being at sea and unfamiliar with the ways of a sailor.