A piece of land having a value of one pound per year(noun)
To oscillate (like the beam of a balance)(verb)
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Use "librate" in a sentence
"Although I question the number of 353, he makes a valid point, and I can understand why educational entrepreneurs would seek to librate themselves by destroying "the status quo.""
"But to librate (rhyming in fact with vibrate) is eventually to seek rest by balancing out its wavering motions."
"He proceeded to see if by making the planet librate, or the plane of its orbit tilt up and down, anything could be done."