[noun] [C usually singular] [literary] - a group of three things or peopleThe inclusion of the trinity of Richards, Thompson and Cole in the team offers England the best chance of victory.(literary) In Christianity, the (Holy) Trinity is the existence of God in three forms (the 'Father', the 'Son' and the 'Holy Spirit') that are part of a single being.British culture now appears to revolve around the unholy trinity of sport, shopping and sex.
TRINITY
Meaning of TRINITY in English
Cambridge English vocab. Кембриджский английский словарь. 2012