Crossword clues for the word: TRIN The word TRIN has appeared as an answer to at least 9 crossword clues on different crossword puzzles. Crossword clues for TRIN Showing 1 to 9 of 9 results Clue(s) "Father, Son, and Holy Ghost: Abbr." Advances-to-declines indicator Group of three: Abbr. Island of the W. Indies: Abbr. One of three of a kind One of triplets. Set of three: Abbr. Tobago's partner: abbr. Triplet