Li″brate (lī″brāt), v. i. [imp. & p. p.Librated (lī″brā̍‐tĕd); p. pr. & vb. n.Librating.] [L. libratus, p. p. of librare to balance, to make even, fr. libra. Cf. Level, Deliberate, Equilibrium.] To vibrate as a balance does before resting in equilibrium; hence, to be poised.
Their parts all librate on too nice a beam. Clifton.