n. 三人一组, 三个一组的东西, 三位一体

Trinity \Trin"i*ty\, n. [OE. trinitee, F. trinit['e], L.
trinitas, fr. trini three each. See {Trinal}.]
1. (Christian Theol.) The union of three persons (the Father,
the Son, and the Holy Ghost) in one Godhead, so that all
the three are one God as to substance, but three persons
as to individuality.

2. Any union of three in one; three units treated as one; a
triad, as the Hindu trinity, or Trimurti.

3. Any symbol of the Trinity employed in Christian art,
especially the triangle.

{Trinity House}, an institution in London for promoting
commerce and navigation, by licensing pilots, ordering and
erecting beacons, and the like.

{Trinity Sunday}, the Sunday next after Whitsunday; -- so
called from the feast held on that day in honor of the
Holy Trinity.

{Trinity term}. (Law) See the Note under {Term}, n., 5.