lībrāmentum — Lewis & Short
lībrāmentum, i, n.id.,
I that which gives to any thing a downward pressure; weight, gravity.
I Lit.:
plumbi,Liv. 42, 63, 4.—
B A fall, descent of water:
libramentum aquae,Plin. 31, 6, 31, § 57:
quod libramentum cum exinanitum est, suscitat et elicit fontem, cum repletum, moratur et strangulat, of a spring that alternately rises and falls,Plin. Ep. 4, 30, 10:
inferiore labro demisso ad libramentum modicae aquae receptae in fauces, palpitante ibi lingua ululatus elicitur, of the croaking of frogs,Plin. 11, 37, 65, § 173.—
II Transf.
A A level surface, horizontal plane: extremitatem et quasi libramentum, in quo nulla omnino crassitudo sit, * Cic. Ac. 2, 36, 116:
sub eodem libramento stare,Sen. Q. N. 1, 12, 1: usque ad libramentum summi fornicis, Ael. Gall. ap. Paul. ex Fest. p. 206 Müll.—
B Evenness, equality:
ventorum hiemalium et aestivorum,Col. 1, 5, 8—
C A straight line:
si recto libramento inter solem terrasque media (luna) successit,Sen. Ben. 5, 6, 4:
libramentum finale,a boundary line, Amm. 15, 4, 4.—
D A weight for balancing or giving motive power (ballista):
ferrea manus cum injecta prorae esset, gravique libramento plumbi recelleret ad solum,Liv. 24, 34, 10:
arietem admotum nunc saxis ingentibus nunc libramento plumbi gravatum ad terram urguebant,id. 42, 63, 4 Weissenb.:
late cladem intulisset, ni duo milites vincla ac libramenta tormento abscidissent,Tac. H. 3, 23.