1. unhewn - Adjective
2. unhewn - Adjective Satellite
(of stone especially) not given a finished form by or as if by hewing
Source: WordNetAs when, O lady mine, With chiseled touch The stone unhewn and cold Becomes a living mold, The more the marble wastes, The more the statue grows. Michelangelo
a house of unhewn grey stone roughly cemented together Source: Internet