Fromun- +bare.
unbare (third-person singular simple presentunbares,present participleunbaring,simple past and past participleunbared)
- (transitive) Tolay bare; toexpose.
1840, David Mushet,Papers on Iron and Steel, practical and experimental:When iron-stone is found near the surface, it is only necessary tounbare the soil and the super-incumbent earths: the stone then presents itself like a pavement more or less inclined, and is easily raised by the application of wedges, bars, &c.