Webster's Revised Unabridged Dictionary · 1913

Trine

Trine , adjective

[See Trinal.]

Threefold; triple; as, trine dimensions, or length, breadth, and thickness.

Trine , noun

[French trine, trin. See Trinal.]

1.
(Astrology) The aspect of planets distant from each other 120 degrees, or one third of the zodiac; trigon.
In sextile, square, and trine. — Milton
2.
A triad; trinity. [Rare]
A single trine of brazen tortoises. — Mrs. Browning
Eternal One, Almighty Trine! — Keble

Trine , transitive verb

To put in the aspect of a trine. [Rare]
By fortune he [Saturn] was now to Venus trined. — Dryden