(trīn) adjective
1. Threefold; triple: also trinal.
2. In astrology, relating to or situated in trine; auspicious.
—noun
1. A compound in three parts or elements; a trio; triad.
2. Her. A charge composed of three objects.
3. In astrology, the aspect of two planets when 120^o apart.
—v.t. Obs. In astrology, to place or join in trine. [<OF trin, trine <L trinus. See TRINAL.]

(trīn) v.i. Obs.
To proceed; go. [<Scand. Cf. OSw. trina tramp.]

(trīn) noun
The Trinity.