Hypertext Webster Gateway: "Librate"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Librate \Li"brate\ (l[imac]"br[=a]t), v. i. [imp. & p. p.
{Librated} (l[imac]"br[asl]*t[e^]d); 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.
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Librate \Li"brate\, v. t.
To poise; to balance.
From WordNet (r) 1.7 (wn)
librate
v : vibrate, as of a swing before it comes to a total rest
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