The leader of a ka-tet in Mid-World culture, the one who commands and takes responsibility for the group's actions and welfare. Roland Deschain serves as dinh of his ka-tet throughout the quest for the Dark Tower. The role carries both authority and obligation - a dinh's word is law within the ka-tet, but the dinh must also answer for the consequences of every decision. The term reflects the deeply hierarchical nature of gunslinger culture.