Trine \Trine\, a. [See Trinal.]

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

Source: Webster's Revised Unabridged Dictionary (1913)
 

Trine \Trine\, n. [F. trine, trin. See Trinal.]

1. (Astrol.) 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. [R.]

A single trine of brazen tortoises. --Mrs. Browning.

Eternal One, Almighty Trine! --Keble.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Trine \Trine\, v. t. To put in the aspect of a trine. [R.]

By fortune he [Saturn] was now to Venus trined. --Dryden.

Source: Webster's Revised Unabridged Dictionary (1913)