plumbless

plumbless

(ˈplʌmlɪs)
adj
incapable of being sounded
References in classic literature ?
With his unbending, utilitarian, matter-of-fact face, he hardened her again; and the moment shot away into the plumbless depths of the past, to mingle with all the lost opportunities that are drowned there.
It is impossible to fully appreciate the mesmerizing, plumbless light that Turrell creates by looking at pictures of his spaces--that would be about as satisfying as eating a menu.
I was excited to meet this man who had sounded such a strident alarm in his lecture, African Studies and the Black American in 1968: "The Negro in America must choose between recovering and becoming fully conscious of his own identity or being washed down the plumbless drains of history as a mindless freak of nature.