كميناً & دفيناً = in their neutral forms (دفين and كمين [originally from the form كامِن) , means , disappearing, covered, cloaked , concealed , implicit, clandestine, entombed. They're very slightly different in that دفين refers to more secrecy and intention to hide something! العظم يتردد فيه النفس تردد الهواء في البرج الخشبي = Oxygen streams in bones like air does within the wooden tower العظم = bones يتردد = to stream (goes back and forth/ in and out), to frequent, to drill, to visit فيه = in it النفس = Oxygen, breath الهواء = Air, Atmospher البرج = the tower الخشبي = wooden, made of wood Hope i helped!