Words only have meanings in context. It might now be that in the context of developmental biology, starfish have heads. It is surely the case that in the contex

Words only have meanings in context. It might now be that in the context of developmental biology, starfish have heads. It is surely the case that in the context of millinery, they do not. But no particular context is canonical, and so you cannot say that in an absolute, context-independent sense starfish do or do not have heads.