Sentence:  Eldridge closed the despatch-case with a snap and, rising briskly, walked down the corridor to his solitary table in the dining-car. Mulligatawny soup, poached <WSD>turbot</WSD>, roast leg of lamb—the usual railway dinner. 
Meaning of the word marked with <WSD> tags:  Any of various other flatfishes of family (Scophthalmidae) that are found in marine or brackish waters.