Sentence:  “... Captain Markam had been found lying half-insensible, gagged and bound, on the floor of the sitting-room, his hands and feet tightly <WSD>pinioned</WSD>, and a woollen comforter wound closely round his mouth and neck ; whilst Mrs. Markham's jewel-case, containing valuable jewellery and the secret plans of Port Arthur, had disappeared. ...” 
Meaning of the word marked with <WSD> tags:  To bind the arms of someone, so as to deprive him of their use; to disable by so binding.