Sentence:  He had not gone one step nearer the lives he had sought to approach nor bridged the restless shame and rancour that had divided him from mother and brother and sister. He felt that he was hardly of the one blood with them but stood to them rather in the mystical kinship of <WSD>fosterage</WSD>, fosterchild and fosterbrother. 
Meaning of the word marked with <WSD> tags:  The condition of being the foster child.