librate noun. ['lʌɪbreɪt] E17.
[medieval Latin librata (terrae) a pound's worth (of land), from libra pound: see -ATE¹.]
Hist. A piece of land worth a pound a year.

[TahlilGaran] English Dictionary ▲

librate verb. ['lʌɪbreɪt] E17.
[Latin librat- pa. ppl stem of librare, from libra balance: see -ATE³.]
1. verb trans. Weigh. E-M17.

2. verb intrans. Oscillate like the beam of a balance; move from side to side or up and down. L17.
b. Oscillate or waver between one thing and another. E19.

3. verb intrans. Of a bird etc.: be poised, balance itself. L18.

■ libratory adjective oscillatory M17.

[TahlilGaran] English Dictionary ▲